Laxmi

Students can Download Maths Chapter 4 Geometry Additional Questions and Answers, Notes Pdf, Samacheer Kalvi 7th Maths Book Solutions Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 7th Maths Solutions Term 3 Chapter 4 Geometry Additional Questions

Additional Questions and Answers

Exercise 4.1

Question 1.
Give some examples of shapes with no line of symmetry.
Solution:
1. A scalene Triangle
2. The letter F

Question 2.
What is the order of rotational symmetry of the letter N?
Solution:
2

Exercise 4.2

Question 1.
Construct a circle of radius 5.2 cm with center ‘O’.

Solution:
Step 1: Market a point‘O’on the paper.
Step 2: Extended the compass distance equal to radius 5.2 cm.
Step 3: At center ‘O’, held the compass firmly and placed the pointed end of the compass.
Step 4: Slowly rotated the compass around to get the circle.

Question 2.
Draw concentric circles with radii 5.2cm and 6.6cm. Find the width of the circular ring.
Solution:

Step 1: Drawn a rough diagram and marked the given measurements Taken any
Step 2: Take any point O and marked it as the center.
Step 3: With O as center, drawn a circle of radius OA = 5.2 cm.
Step 4:With O as center, drawn a circle of radius OB = 6.6 cm. Thus the concentric circles C₁ and C₂ are drawn.
Width of the circular ring = OB – OA = 6.6 – 5.2 = 1.4 cm

Students can Download Samacheer Kalvi 12th English Letter Writing, Notes, Samacheer Kalvi 12th English Book Solutions Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 12th English Letter Writing

Letters are the most common forms of written communication. Writing letters is an art and it is mastered through practice. We write letters to friends and relatives to maintain contacts with them. However, in the present times with the boom in methods of communication, many of us don’t have the time or the inclination, or the temperament and the art to write letters. So telephone, fax and e-mail have replaced personal (informal) letters. However, formal letters are still in vogue.

Commerce, trade, official correspondence, public representation, complaints and other dealings, transactions and communication with the people are still conducted through letters. Students are therefore advised to cultivate the art and skill of letter writing. It must be remembered that different kinds of letters follow different conventions. So, the format should suit the type.

Informal Letters
These are ordinary personal letters and informal invitations written to relatives, friends and acquaintances. The main characteristics of informal letters are:

• These letters are first/second person presentations.
• Personal feelings and emotions find expression.
• The writer’s address is given in the usual place.
• The salutation is usually ‘Dear’ plus ‘Name’.
• The date of writing is given, but the year is generally omitted.
• The style and tone are relaxed and informal.
• Different tenses are used as the sense demands.
• The complimentary close is: ‘Yours lovingly’ or ‘Yours truly’.

Formal Letters
A formal letter is different from a personal letter in tone and content. These letters are written for official purposes or commercial correspondence, so they must be systematic, specific in content and formalin treatment of the subject.

The main features of formal letters are:

• The matter is brief, clear and to the point.
• There are separate paragraphs for separate topics.
• The first paragraph indicates the theme of the letter.
• The facts are stated in simple and direct language.
• Long and high sounding words are avoided.
• Even while lodging a complaint or making criticism, the tone should be polite.
• Clumsy expressions should not be used.
• The complimentary close is: ‘Yours sincerely’, or ‘Yours faithfully’.

Format/Layout Of A Formal Letter
08th March, 20XX

From
XXX
Sender’s Address & Phone No.
To
THE DIRECTOR
Addressee’s Address
………………………………
………………………………
Respected Sir/Madam,

SUB: For the post of a Senior Accountant
REF: The Hindu dated 06/03/20XX

With reference to your advertisement dated 6th March, 20XX in The Hindu, I hereby wish to apply for the post of a Senior Accountant in your esteemed organization.

If given an opportunity I assure you of my sincere service to the satisfaction of my superiors. Please find enclosed my Bio-data for your kind perusal and looking forward to a positive reply at the earliest.

Thank you,
Yours sincerely,
XXX

To
THE DIRECTOR
………………………….
………………………….

Note: There is no punctuation after From and To Thank you has been used instead of Thanking you

Types Of Formal Letters
A. Business Letters

• Making enquiries/asking for information
• Replying to enquiries/giving information
• Placing orders and sending replies
• Cancelling orders
• Letters of complaints

B. Official Letters

• Registering complaints regarding civic amenities, law & order, etc.
• Making enquiries pertaining to developmental projects, health facilities, etc.
• Making requests/appeals

C. Letter To The Editor

• Giving suggestions on an issue (usually of public interest)
• Expressing views on an issue already raised in an article/write-up/in a published letter

D. Letter Of Application

• Applications for jobs

What Is A Bio-Data?
The application for a job is sometimes accompanied by a bio-data of the applicant. The bio¬data is also called a resume or curriculum vitae (C.V.). It contains the following information about the candidate:

• Personal information, e.g., age, health, sex, etc.
• Educational/professional qualifications
• Experience/suitability for the job

Bio-Data
Name – XXX
Date Of Birth – 8th May, 1986
Marital Status – Married
Husband’S Name – Mr. Shandy Rajeevan
Address For Communication – YYY
Contact Number – Mobile – 9988776655
Residence – 012 22445566
Mother Tongue – Tamil
Language Known – English and Tamil Hindi and Malayalam (to speak)
Passport Number – A7265511

Educational Background : (In reverse chronological order)

Professional Experience : (In reverse chronological order)

Hobbies – Photography, Gardening, Reading, Travelling
Expected Salary – Rs 35,000/ per month
Salary Drawn – Rs 32,000/ per month
Reference – 1. Mr. Ravi (XYZ Pvt. Ltd.) 9998887777, 2. Mrs. Rani (Raj Enterprises) 9900000222

Declaration
I hereby declare that the above given information is true to my knowledge.

STATION: YYY XXX
DATE : 08.03.20

XX
Signature Of The Applicant

Solved Questions
Informal Letter
(i) Write a letter to your father and mother seeking his permission to join Karate class.

Dear Mom and Dad,

Chennai
01.02.19

I’m fine. I hope all are fine at home. I wish to join the karate class. Mr. Saravanan is the instructor. The charges are only two hundred rupees per month. The classes start next Monday. Please give me permission.

Thank you,

Yours lovingly,
XYZ

To
Mr. Mukesh,
12, Railway Station Road,
Nagercoil

(ii) Write a letter to your grandmother enquiring of her health and informing her of your arrival during vacation.
Answer:
Dear Grandma,

Chennai
09.03.19

How are you my dear grandma? I’m fine and am waiting for my vacation. I am coming to visit you and spend the vacation with you, listening to your stories and having your handmade delicacies. I’ll reach Trichy on 25.04.2019. Anxiously waiting to meet you. Love you, grandma.

Thank you,

Yours lovingly,
XYZ

To
Mrs. Seema Mani,
15, MG Road,
Trichy

Formal Letter
Letter Of Enquiry
(i) As Cultural Secretary of your school, write a letter to the Cultural Program Co-ordinator, Don Bosco School requesting him/her for details regarding the inter-school competitions to be held on 20.1.2019.
Answer:
05 Jan, 2019
B. Amrita
Chettinad School
Ramapuram
Chennai

Cultural Program Co-ordinator
Don Bosco School
Perambur Sir,

Sub: Information regarding inter-school competitions
We have received the notification about the inter-school competitions to be held in your school. Kindly confirm the details that is mentioned in the poster.

1. Participants from school: 25 No.s
2. Registration fees : Rs. 250/- (DD attached)
3. Time of entry: 8.30 am
4. No. of competitions a participant can take part in: 3
5. No. of teachers to accompany students: 3
6. Last date for registration: 10.01.2019

The specific conditions and eligibility criteria may please be intimated to us.
I hope you will provide the necessary information at the earliest.

Yours faithfully
B. Amrita
Sports Secretary

To
Cultural Program Co-ordinator
Don Bosco School, Perambur
Chennai

(ii) Roshan M. of 12 Gandhi Nagar, Chennai, a Class XII student of the Science stream sees this advertisement.

He writes a letter to the institute seeking information about the subjects taught, the timings of the classes, class size and fees. Write his letter.
Answer:
16 March, 2019
Roshan M.
12, Gandhi Nagar
Chennai
The Director
Success Institute
10-A, Race Course Road, Guindy
Chennai

Sir,
Sub: Coaching for NEET
Kindly refer to your advertisement in the Deccan Times dated 14 March. I would like more information and details about NEET coaching the institute offers, facilities available, timings, fee structure and size of classes/groups. I need special coaching in Physics and Chemistry. Please let me know if coaching is available in all these subjects and what is the schedule. Does your institute cater to individual difficulties or do you discuss and resolve general problems?

Kindly enlighten me on all the above points. In case you have a detailed information booklet, do send it to my address given above.

Yours faithfully
Roshan M.

To
The Director
Success Institute
10-A, Race Course Road, Guindy
Chennai

(iii) You are Raghu/Ragini of Tirunelveli. As the teacher in charge of an excursion party that your school is sending on an educational tour to Ajanta and Elora Caves during the Christmas vacation write a letter of inquiry to Happy Tours & Travels, Tirunelveli seeking information regarding transport, accommodation etc.
Answer:
10 March 2019
Ragini R.
5th Main Road, Anbu Nagar
Tirunelveli

M/s Happy Tours & Travels
8, Thendral Nagar
Tirunelveli

Sir,
Sub: Seeking information regarding transport, accommodation etc.

Adithya Vidhya Niketan – Matric Higher Secondry Schoo, Tirunelveli is planning an educational tour of students and teachers to the world famous caves of Ajanta and Elora. The tour party will consist of 20 senior students, two teachers and a peon. We would appreciate if you provide us the specific information regarding the following things at the earliest:

1. Type of transport to be provided
2. Rates for AC and Non-AC coaches
3. Rates for budget-accommodation
4. Rates for dormitory accommodation, if any.
5. Separate two rooms for teachers and the peon

The itinerary is as follows:
Dec 20: Departure from Tirunelveli
Dec 27: Back to Tirunelveli

We expect complete transparency. No hidden charges, please. Any other details regarding the educational tour will be appreciated.

Yours faithfully,
Ragini R.

To
M/s Happy Tours & Travels
8, Thendral Nagar
Tirunelveli

(iv) You are A.V. Sharmila, in charge of the Physical Education Department of your school. You need various items of sports for the department Write a letter to Mr. Bahadur Singh & Sons, a well known supplier of sports goods, Trichy enquiring him about the rates of each item and the maximum discount that they can offer to you.
Answer:
12 Feb 2019
A.V. Sharmila
10th Main Road, Valadi
Trichy

Mr. Bahadur Singh & Sons
Shop No. 59
Palur
Trichy

Dear Sir,
Sub: Enquiring about rates & discount
We are old customers of yours and need no introduction. Being a leading supplier of sports goods, we can expect the best quality of goods at competitive rates. As we are placing a bulk order with you, we want to inquire at what rates you can supply each item of different sports. The likely number of items with their details to the purchased are attached with here. Kindly study them thoroughly and give the lowest quotations at which you can supply the desired goods.

Let us remind you that you have been giving us 20% flat discount on various items. As we . are an educational institution, we would expect a special discount that dealers generally give to such institutions. Kindly do the needful and furnish all the details regarding the inquiries at the earliest.

Yours faithfully,
A. V. Sharmila

To
Mr. Bahadur Singh & Sons
Shop No. 59
Palur
Trichy

Complaint Letter
(i) You are Ramya Mehar of 23-Railway Quarters, Aynavaram, Chennai. Last week you bought a mobile phone from ‘Universal Mobile’, 20L, Luz Corner, Chennai. The mobile phone developed a problem within a few days of its purchase. Write a complaint letter to the dealer giving details of the nature of the problem and asking him/her to rectify the defect or replace the phone.
Answer:
26th March, 2019
Ramya Mehar
23-Railway Quarters
Aynavaram
Chennai
M/s Universal Mobile
20L, Luz Comer
Chennai

Dear Sirs,
Sub: Defective Mobile Phone

I am a resident of Beedan Pura, Karol Bagh, New Delhi. I purchased a Samsung 2G mobile phone from Universal Mobile on 19th March, 2019.1 am sorry to say that the mobile phone developed a problem within a few days of its purchase. The sound system is quite irritating and jarring. The camera doesn’t give a clear and deep impression. I feel cheated to have such a defective mobile phone after spending more than twelve thousand mpees. It is quite unfortunate that even after sending two reminders, you have shown no urgency to rectify the defects or replace the defective mobile set at the earliest. I hope you will do the needful within a week. I am sure you will not compel me to knock the doors of the Consumer Court for this unpleasant lapse of time on your part.

Yours sincerely
Ramya Mehar

To
Universal Mobile, Luz Comer
Chennai

(ii) You received a defective computer in response to your order from M/s K.R. Electronic ‘ Gadgets, Triplicane, Chennai. Write a letter to the dealer requesting him to change the defective computer at the earliest. You are Karnan K. of Kamaraj Nagar, Chennai.
Answer:
18th March, 2019
Karnan K.
Kamaraj Nagar
Chennai

K.R. Electronic Gadgets
54-C
Triplicane
Chennai
Sub: Defective Computer
Dear Sir,
I am sorry to express my utter dismay at the poor quality of the computer supplied by you in response to my order, dated 10th March, 2019. On examination, we noticed the following defect and discrepancies in the computer supplied by you:

1. The order was for Windows 8, Acer Computers. You have sen’t Windows 7 of the same brand. The price difference of the two brands is quite substantial.
2. The screen is of quite poor quality and the display is quite hazy.
3. The sound system lacks depth and clarity.

M/s K.R. Electronic Gadgets is a leading dealer in computers and the company enjoys a good reputation and goodwill in the market. As the purchase is well within the warranty period, I hope you will replace the defective computer at the earliest and oblige. Earliest the letter

Yours sincerely
Karnan K.

To
The Sales Manager
K.R. Electronic Gadgets
Triplicane
Chennai

(iii) Write a letter to the Chairman of the Municipal Board regarding unsanitary conditions of the locality you live in.
Answer:
25 March 2019
Malar
11, Station Road
Ayanavaram
Chennai

The Chairman
Municipal Board
Chennai

Sir,
Sub: Insanitary conditions in my locality

I wish to draw your kind attention towards the insanitary conditions that have prevailed in my locality i.e., SVM colony. The light is generally off. Some fruit sellers throw rubbish material on the road. As a result, the road looks dirty. Flies fly over the rubbish all the time. One can find pigs and astray dogs move freely around the rubbish. The entire environment has become suffocative. We students, suffer a lot because mosquitoes trouble us at night when we are studying or doing homework.
I therefore, request you to kindly pay attention to my locality and do the needful.

Thanking you
Yours faithfully
Malar

To
The Chairman Municipal Board Chennai

Letter Of Placing Order
(i) You are K. Raina, Head of the Chemistry department of Kesari Hr. Secondary School. Chennai. You require various lab apparatuses and chemicals for your laboratory. Write a letter to M/s Om Scientific Works, Chennai placing a bulk order for the purchase of various items. Mention all the necessary details of the items as well as the discounts available on the purchase.
Answer:
20th April, 2019
K. Raina
Kesari Hr. Secondary School
Sharanpur

M/s Om Scientific Works
Parrys, Chennai
Sub: Order for apparatus and chemicals
Dear Sirs

I hope we need no introduction. Kesari School has been an old customer of yours. As you are a trusted name in the supply of scientific goods for educational institutions, we are placing a bulk order for the same. We expect competitive rates and discounts on the purchase. The details of the items are as given below.

We appreciate the general 20% discount that you provide on the purchase of scientific goods. However, we hope that you will provide an extra 5% discount as most of the dealers are giving to the educational institutions.

All items must reach in proper shape, size and weight.

Thanking you

Yours faithfully
K. Raina

To
M/s Om Scientific Works Parrys,
Chennai

(ii) YOU are L. R. Aggarwal, General Manager, Aggarwal Enterprises, Coimbatore. You ‘ need various items of furniture and stationery for your newly constructed head office. Write a letter to Messers Officials Works, Chennai placing a bulk order for the supply giving all details of the items so ordered.
Answer:
27.05.2019
General Manager
Aggarwal Enterprises
Chennai

M/s Official Works
Central Market
Chennai

Sir,
Sub: Furniture & other items for office

We have to furnish our newly constructed head office and its rooms in Civil Lines, Chennai. We had demanded quotations from various firms that supply furniture and related items for offices.

We are approving the quotations sent by you as they are the lowest. Hence, we have decided to place a bulk order for the supply of furniture, stationery and other related items with you for our office.

The details of the items are furnished below:

Kindly send all the items in their proper sizes, specifications and conditions.

Thanking you

Yours faithfully
L. R. Aggarwal

To
M/s Official Works Central Market
Chennai

Letter Of Cancelling Order

(i) You are Raman, Sales Manager of Modern Shoes, Madurai. You placed a bulk order with Messers Shobha Shoes, Madurai for the supply of Shoes for your showroom. The firm has failed to execute the order. In spite of your many reminders. There is no positive response from them. Write a letter to the firm that you are constrained to cancel the order that you had placed to them.
Answer:
25th September, 2018
K. Raman
Modem Shoes
TVS Nagar
Madurai
M/s Shobha Shoes
Pandian Nagar
Madurai
Dear Sirs
Sub: Order for Men s & Women Shoes

I can express only my deep dismay and displeasure at the non-execution of the bulk order that we placed with you for the purchase of shoes on 10th August, 2018. The said order was to be executed within 10 days. However, when more than a month expired, you expressed regrets giving the strike of workers in the factory as the main reason of non-execution. We accepted your request for executing the order within a week. We condoned the delay keeping in view of our previous good business terms. As we have not heard from you recently, we have reasons to believe that cancellation of the said order is the only way left out for us. I hope that the cancellation of the said order will not affect our otherwise good business terms in future.

Yours faithfully K. Raman

To
M/s Shobha Shoes
Pandian Nagar
Madurai

Letter Of Request
(i) This summer vacation you are planning to visit Simla. Write a letter to a travel agency in Shimla requesting them to book you a room in a five-star hotel. Give other details of, your journey and facilities you require there. Sign your name as Reena/Mohanan, C/5, Mambalam, Chennai.
Answer:
27.03.2019
C. Mohanan
C/5, Mambalam
Chennai

The Manager
Globe Travel Agency
The Mall, Shimla

Dear Sir,
Sub: Hotel accommodation and other facilities

I am planning to visit Shimla during the summer vacation. I intend to reach there on 16 May ‘ by the IC 308 flight and stay there for a week. You are requested to book a deluxe double bedroom in a five-star hotel, as I will be accompanied by my friend. I shall also need a chauffeur-driven car to take us in and around Shimla.

Please make these facilities available for a week, i.e., from 16 May to 22 May, 2019. A bank draft for ‘ 5000 is enclosed as advance. Please confirm the bookings so that the remaining amount may be sent to you.

Thanking you

Yours faithfully
C. Mohanan

To
The Manager
Globe Travel Agency
The Mall, Shimla

Official Letters

(i) You are Shanti/Sravan of New Friends Colony, Chennai. The residents of your area suffer miserably from the frequent power cuts and voltage fluctuations. This results in frequent damage to the electric appliances. Power cuts also cause a great ipconvenience to students at night. Write a letter of complaint to the Chief Engineer, Electricity Board of your area seeking immediate relief and quick action.
Answer:
25 March, 2019
A. Shanti
23-L, New Friends Colony
Pattabiram Chennai
The Chief Engineer
Electricity Board
Chennai

Sir,
Sub: Frequent power cuts and low voltage
It is quite surprising that the residents of such a posh colony such as Friends Colony are made to bear a lot of inconvenience and trouble due to frequent break downs of electricity and voltage fluctuations. Delhi doesn’t remain a pleasant place to live in the scorching summer weeks. The temperature shoots even upto 45°C and more. The erratic supply of electric power only compounds the sufferings of the people. The low voltage makes it difficult for the air conditioners and fans to operate at their required capacity. Great voltage fluctuations have resulted in damaging domestic electrical appliances.

Students of the area are the worst sufferers. The examinations are round the comer. They can’t study properly at night even during their examinations. Friends Colony Residents Welfare Association has been taking the issue regularly with the concerned authorities. Nothing fruitful has come out so far. I request on behalf of residents and students in particular to ensure the regular and trouble-free supply of power in the Colony.

Yours truly
A. Shanti

To
The Chief Engineer
Electricity Board
Chennai

Letter To The Editor
(i) Given below is an extract from an article in ‘Newsweek’: ‘For years, I ate fast food because it was efficient and cheap. I had no idea 1 could be damaging my health,’ says Caesar Barbar, 56, a maintenance worker with heart disease.

Write a letter to the editor of a daily newspaper on the health hazards caused by junk food using your own ideas
Answer:
29.08.2019
12-L, Saidapet
Chennai

The Editor
The Adayar Times
Chennai

Dear Sir,
Sub: Health hazards caused by junk food
Through the column of your esteemed daily, I want to highlight the health hazards being caused by eating the so called ‘fast or junk food’.

The globalization is not confined to the economy only. Even our food habits have been globalised. The craze for fast foods like burgers, pizzas and pasta has increased in recent years. The youth have developed special liking for them. McDonalds, KFCs, Pizza Huts are leading multinationals who promote junk foods.

The junk food, no doubt, tingles our tastebuds. But it has little or no nutritional value. The general public, particularly, the youth must know the health hazards caused by the regular . eating of junk food. It causes obesity. Habitual eaters suffer from many other diseases of liver, digestion and kidneys. Let us remember that fresh food cooked in our kitchen with a liberal use of vegetables and fruits is really tasty as well as nutritious. The junk food is good only for ‘junkies’.

Thanking you

Yours faithfully
N. Mani

To
The Editor
The Adayar Times
Chennai

Letter Of Application

(i) Read the following advertisement and respond to it with a resume/bio-data/CV considering yourself fulfilling the conditions specified.
[Write XXXX for your name and YYYY for your address]

Wanted office assistant for an upcoming CBSE school. An accounts graduate with knowledge in typing and computer operation are welcome. Experience is not a must. Pleasing manners and good communication skills will be a plus.

Apply to the Manager, before 25th March to:
210, Gandhi Road,
Coimbatore
Answer:
From
XXXX
YYYY

To
210, Gandhi Road
Coimbatore – 02.

Respected Sir/Madam,
Sub: Application for the post of office assistant

With reference to your advertisement in The Hindu, dated 8th March, 20XX seeking applications for the post of office assistant, I offer my candidature for the same. Please find enclosed my bio-data / resume to enable you to assess my suitability for the aforesaid post.

Yours sincerely,
XXXX

Resume
Name : XXXX
Date of Birth: 18th May, 1994
Marital Status: Single
Father’s Name: Mr. Rajesh
Address For Communication: YYYY
Contact number – mobile: 9998777688 residence: 22345577
Mother Tongue: Tamil
Language Known: English and Tamil

Educational Background

Technical knowledge:
1. English typewriting higher
2. Computer MS office
Hobbies : Dramatics, Reading, Debating.
Expected Salary : 25,000/ per month
Salary Drawn : 18,000/per month

Declaration
I hereby declare that the above given information is true to the best of my knowledge.

Station : YYYY
Date : 10.03.2019

Yours faithfully
XXXX
Signature of the Applicant

To
210, Gandhi Road
Coimbatore – 02.

(ii) Read the following advertisement and respond to it with a resume/bio-data/CV considering yourself fulfilling the conditions specified. [Write XXXX for your name and YYYY for your address]

Software Company requires experiences Male/Female Secretary to M.D.
Candidate should be graduate with Software knowledge and good communication skills in English.
Apply to:
Box No: WW 55164
C/o The Hindu
Chennai 02
Answer:
17th Dec, 2019

From
XXXX
YYYY

To
Box No: WW 55164
C/o The Hindu
Chennai 02

Respected Sir/Madam,
Sub: Application for the post of Secretary to M.D.
With reference to your advertisement in The Hindu, dated 13th March, 20191 would like to apply for the post of secretary in your comapny. Please find enclosed my bio-data / resume to enable you to assess my suitability for the aforesaid post.

Yours sincerely,
XXXX

Resume
Name : XXXX
Date of Birth: 18th July, 1992
Marital Status: Single
Father’s Name: Mr. Ramesh
Address For Communication: YYYY
Contact number – mobile: 9998778588 residence: 22349577
Mother Tongue: Tamil
Language Known: English and Tamil

Educational Background

Technical knowledge:
1. English typewriting higher
2. Computer MS office

Experience:
Secretary for 4 years, K.K. Software Company, T.Nagar
Hobbies : Dramatics, Reading, Music.
Expected Salary : 35,000/ per month
Salary Drawn : 28,000/ per month
Language Known : English, Hindi and Tamil

I am enclosing photostat copies of my testimonials for your kind perusal.

I request that my application may be favourably considered. I sincerely assure you, sir, of my efficient service to your company, If I am selected. Looking forward to receiving your call letter.

Enel: Copies of testimonials

Declaration
I hereby declare that the above given information is true to the best of my knowledge.

Station: YYYY
Date : 10.03.2019

Yours faithfully
XXXX
Signature of the Applicant

To
Box No: WW 55164
C/o The Hindu
Chennai 02

(iii) Read the following advertisement and respond to it with a resume/bio-data/CV considering yourself fulfilling the conditions specified. [Write XXXX for your name and YYYY for your address]

Wanted
A private company requires a salesman to deal with water filters. Experience in a similar position preferable. Apply with bio-data to Box No.3224, C/o. The Hindu, Madurai – 625 002.
Answer:
15th Sept, 2018
From
XXXX
YYYY

To
Box No.3224
C/o. The Hindu
Madurai – 625 002

Respected Sir/Madam,
Sub: Application for the post of salesman – Regarding

This is in response to your advertisement write to referred above for the post of salesman. I apply for the post of salesman in your esteemed firm. I have the required qualification. My particulars are furnished for your perusal and favourable consideration.

Yours sincerely,
xxxx

Resume
Name: XXXX
Date of Birth: 18th July, 1990
Marital Status: Single
Father’s Name: Karuppiah
Address For Communication: YYYY
Contact number – mobile: 9998778588, residence: 22349577
Mother Tongue: Tamil
Language Known: English and Tamil

Educational Background

Technical knowledge:
1. English typewriting higher
2. Computer MS office
Experience: Worked as Sales man in Laxmi Textiles, Kovai for 5 years.

Hobbies : Dramatics, Reading, Music.
Expected Salary : 35,000/ per month
Salary Drawn : 28,000/ per month
Joining Time : Can join in a week notice
Language Known : English, Hindi and Tamil

I assure you that if I am selected discharge my duties to the best of my abilities and to the utmost satisfaction of my superiors.

Photo stat copies of my credentials have been enclosed for your kind perusal.

Expected Salary Salary Drawn Joining Time Language Known
Enel: Copies of testimonials

Declaration
I hereby declare that the above given information is true to the best of my knowledge.

Yours faithfully
XXXX
Signature of the Applicant

Station : YYYY
Date : 15.09.2018

To
The Managing Director, Lakshmi Textiles,
174, Broadway, Chennai – 105

Students can Download Maths Chapter 4 Geometry Intext Questions and Answers, Notes Pdf, Samacheer Kalvi 7th Maths Book Solutions Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 7th Maths Solutions Term 3 Chapter 4 Geometry Intext Questions

Exercise 4.1
Try These (Text book Page No. 72)

Question 1.
Can you draw a shape which has no line of symmetry?
Solution:
Yes

Question 2.
Draw all possible line of symmetry for the following shapes.
Solution:

Think (Text book Page No. 73)

Question 1.
What can you say about the number of lines of symmetry of a circle?
Solution:
A circle has infinite number of lines of symmetry.

Try These (Text book Page No. 73)

Question 1.
Reflect the words CHEEK, BIKE, BOX with horizontal line.
Solution:

Question 2.
Reflect the following words with vertical line.

Solution:

Think (Textbook Page no.73)

Question 1.
Will the figure be symmetric about both the diagonals?
Solution:
Yes, it is symmetric about both the diagonals.

Try These (Text book Page No. 74)

Question 1.
Find the order of rotational symmetry of the following figures.

Solution:
Order of symmetry : 6
Order of symmetry : 3

Question 2.
Find the order of rotational symmetry for an equilateral triangle.
Solution:

For an equilateral triangle order of rotational symmetry is 3.

Think (Text book Page No. 74)

Question 1.
Can a parallelogram have a rotational symmetry?
Solution:

Yes, order of rotational symmetry is 2.

Try These (Text book Page No. 75)

Question 1.
Using translational symmetry make new pattern with the given figure.

Solution:

Try These (Text book Page No. 77)

Question 1.
Translate this figure to 4 → 3↑

Solution:

Question 2.
Translate this figure to 2 ↓ 1 ←

Solution:

Question 3.
How is the pre-image A translated to image A’ in each of the following figures?
(i)

(ii)

Solution:
(i) 8 →

(ii) 5 → 3 ↑

Think (Text book Page No. 78)

Question 1.
The pre-image and the image after a translation coincide. What can you say about the translation
Solution:
There is no right, left, up or down movement took place.

Try These (Text book Page No. 80)

Question 1.
Draw the line reflection in the following pictures.

Solution:

Question 2.
Reflect the shape with given line of reflection.

Solution:

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Tamilnadu Samacheer Kalvi 12th Commerce Solutions Chapter 4 Introduction to Financial Markets

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Samacheer Kalvi 12th Commerce Introduction to Financial Markets Textbook Exercise Questions and Answers

I. Choose the Correct Answer

Question 1.
Financial market facilitates business firms.
(a) To rise funds
(b) To recruit workers
(c) To make more sales
(d) To minimize fund requirement
Answer:
(a) To rise funds

Question 2.
Capital market is a market for
(a) Short Term Finance
(b) Long Term Finance
(c) Long term Finance
(d) Both Short Term and Medium Term Finance
Answer:
(c) Long term Finance

Question 3.
Primary market is also called as _________
(a) Secondary market
(b) Money market
(c) New Issue Market
(d) Indirect Market
Answer:
(c) New Issue Market

Question 4.
Spot Market is a market where the delivery of the financial instrument and payment of Cash occurs ________
(a) Immediately
(b) In the future
(c) Uncertain
(d) After one month
Answer:
(a) Immediately

Question 5.
How many times a security can be sold in a secondary market?
(a) Only one time
(b) Two time
(c) Three times
(d) Multiple times
Answer:
(d) Multiple times

II. Very Short Answer Questions

Question 1.
What are the components of organized sectors?
Answer:

1. Regulators
2. Financial Institutions
3. Financial Markets.
4. Financial Services

Question 2.
Write a note on financial market.
Answer:
A financial market is an institution or arrangement that facilitates the exchange of financial instruments such as equity shares, preference shares, debentures, deposits and loans, corporate stocks and bonds, government bonds, and more exotic instruments such as options and futures contracts.

Question 3.
What is equity market?
Answer:
Equity Market is the financial market for trading in Equity Shares of Companies.

Question 4.
What is debt market?
Answer:
Debt Market is the financial market for trading in Debt Instrument (i.e. Government Bonds or Securities, Corporate Debentures or Bonds).

Question 5.
How is price decided in a secondary market?
Answer:
Financial markets allow for the determination of the price of the traded financial asset through the interaction of buyers and sellers. They provide a signal for. the allocation of funds in the economy, based on the demand and supply, through the mechanism called price discovery processes.

III. Short Answer Questions

Question 1.
Give the meaning and definition of financial market.
Answer:
Meaning: A market wherein financial instruments such as financial claims, assets and securities are traded is known as a‘financial market’.
Definition: According to Brigham, Eugene F, “The place where people and organizations wanting to borrow money are-brought together with those having surplus funds is called a . financial market.”

Question 2.
Differentiate spot market from future market.
Answer:
Spot Market:

Spot market is otherwise called cash market. it is a market where the delivery of the financial instrument and payment of cash occurs immediately, i.e. settlement is completed immediately.

Future Market:

Future market is otherwise called forward market. It is a market where the delivery of asset and payment of cash takes place at a predetermined time frame in future.

Question 3.
Write a note on Secondary Market.
Answer:
Secondary Market is the market for securities that are already issued. Stock Exchange is an important institution in the secondary market.

Question 4.
Bring out the scope of financial market in India.
Answer:
The financial market provides financial assistance to individuals, agricultural sectors, industrial sectors, service sectors, financial institutions like banks, insurance sectors, provident funds and the government as a whole. With the help of the financial market all the above stated individuals, institutions and the Government can get their required funds in time. Through the financial market the institutions get their short term as well as long term financial assistance. It leads to the overall economic development.

IV. Long Answer Questions

Question 1.
Distinguish between new issue market and secondary market
Answer:

Question 2.
Enumerate the different kinds of financial markets.
Answer:
Financial Markets can be classified in different ways.

(A) On the Basis of Type of Financial Claim

1. Debt Market is the financial market for trading in Debt Instrument (i.e. Government Bonds or Securities, Corporate Debentures or Bonds).
2. Equity Market is the financial market for trading in Equity Shares of Companies.

(B) On the Basis of Maturity of Financial Claim

1. Money Market is the market for short term financial claim (usually one year or less) E.g. Treasury Bills, Commercial Paper, Certificates of Deposit.
2. Capital Market is the market for long term financial claim more than a year E.g. Shares, Debentures.

(C) On the Basis of Time of Issue of Financial Claim

1. Primary Market is a term used to include all the institutions that are involved in the sale of securities for the first time by the issuers (companies). Here the money from investors goes directly to the issuers.
2. Secondary Market is the, market for securities that are already issued. Stock Exchange is an important institution in the secondary market.

(D) On the Basis of Timing of Delivery of Financial Claim

1. Cash/Spot Market is a market where the delivery of the financial instrument and payment of cash occurs immediately, i.e. settlement is completed immediately.
2. Forward or Futures Market is a market where the delivery of asset and payment of cash takes place at a pre-determined time frame in future.

(E) On the Basis of the Organizational Structure of the Financial Market

1. Exchange Traded Market is a centralized organization (stock exchange) with standardized procedures.
2. Over-the-Counter Market is a decentralized market (outside the stock exchange), with customized procedures.

Question 3.
Discuss the role of financial market.
Answer:

1. Savings Mobilization: Obtaining funds from the savers or ‘surplus’ units such as household individuals, business firms, public sector units, Government is an important role played by financial markets. .
2. Investment: Financial market plays a key role in arranging the investment of funds thus collected, in those units which are in need of the same.
3. National Growth: Financial markets contribute to a nation’s growth by ensuring an ’ unfettered flow of surplus funds to deficit units. Flow of funds for productive purposes is also made possible. It leads to overall economic growth.
4. Entrepreneurship Growth: Financial markets contribute to the development of the entrepreneurial class by making available the necessary financial resources.
5. Industrial Development: The different components of financial markets help an accelerated growth of industrial and economic development of a country and thus contributing to raising the standard of living and the society’s well-being.

Question 4.
What are the functions of Financial Markets?
Answer:
(I) Intermediary Functions:

1. Transfer of Resources: Financial markets facilitate the transfer of real economic resource from lenders to ultimate borrowers.
2. Enhancing Income: Financial markets allow lenders earn interest/dividend on their surplus investible funds and thus contributing to the enhancement of the individual and the national income.
3. Productive Usage: Financial markets allow for the productive use of the funds borrowed and thus enhancing the income and the gross national production.
4. Capital Formation: Financial markets provide a channel through which new savings flow to aid capital formation of a country.
5. Price Determination: Financial markets allow for the determination of the price of, the traded financial asset through the interaction of buyers and sellers.
6. Sale. Mechanism: Financial market provides a mechanism for selling of a financial asset by an investor so as to offer the benefits of marketability and liquidity of such assets.
7. Information: The activities of the participants in the financial market result in the generation and the consequent dissemination of information to the various segments of the markets, so as to reduce the cost of transaction of financial assets.

(II) Financial Functions:

1. Providing the borrowers with funds so as to enable them to carry out their investment plans.
2. Providing the lenders with earning assets so as to enable them to earn wealth by deploying the assets in productive ventures.
3. Providing liquidity in the market so as to facilitate trading of funds.

Question 5.
Discuss the various types of financial markets,
Discuss the various types of financial assets,
Answer:
Financial assets can be classified differently under different circumstances. One such classification is:

1. Marketable assets
2. Non-marketable assets

Marketable Assets: Marketable assets are those which can be easily transferred from one person to another without much hindrance. Example: Shares of Listed Companies, Government Securities, Bonds of Public Sector Undertakings etc.
Non-Marketable Assets: On the other hand, if the assets cannot be transferred easily, they come under this category. Example: Bank Deposits, Provident Funds, Pension Funds, National Savings Certificates, Insurance Policies etc.

Samacheer Kalvi 12th Commerce Introduction to Financial Markets Additional Questions and Answers

I.A. Choose the Correct Answer

Question 1.
The Indian financial system can be broadly classified into ______ sector.
(a) Two
(b) Three
(c) One
(d) Four
Answer:
(a) Two

Question 2.
Indian organised financial system consist of ______
(a) Two
(b) Four
(c) Three
(d) six
Answer:
(b) Four

Question 3.
Which one is matched correctly?

Answer:
(c) On the basis of time of issue of financial claim (iii) Debt market

Question 4.
Find the odd one out.
(a) Debt market
(b) Capital market
(c) Secondary market
(d) National Growth
Answer:
(d) National Growth

Question 5.
Assertion (A): The market for securities that are already issued.
Reason (R): Stock exchange is an important institution in the secondary market.
(a) (A) is True
(b) (R) is true
(c) Both are true
(d) (A) is correct but (R) is not
Answer:
(c) Both are true

Question 6.
Find the odd one out.
Debt instruments in the debt market are ______
(a) Government Bonds
(b) Corporate debentures
(c) Equity Shares
(d) Government securities
Answer:
(c) Equity Shares

Question 7.
Stock exchange is an important institution in the ______ market.
(a) secondary
(b) primary
(c) capital
(d) money
Answer:
(a) secondary

B. Fill in the blanks

1. Over-the-counter market is a ______ market.
Answer:
Decentralised

II. Very Short Answer Questions

Question 1.
What is money market?
Answer:
Money Market is the market for short term financial claim (usually one year or less) e.g. Treasury Bills, Commercial Paper, Certificates of Deposit.

Question 2.
What do you mean by capital market?
Answer:
Capital Market is the market for long term financial claim more than a year e.g. Shared, Debentures.

Question 3.
What is primary market?
Answer:
Primary Market is a term used to include all the institutions that are involved in the sale of ‘ securities for the first time by the issuers (companies). Here the money from investors goes directly to the issuers.

Question 4.
What are the markets on the basis of the organisational structure of the financial market?
Answer:

1. Exchange Traded market
2. Over-the-Counter Market

Question 5.
What are the markets on the basis of time of issue of financial claim?
Answer:

1. Primary market
2. Secondary market

Question 6.
Define Capital market.
Answer:
According to Arun K. Datta, capital market may be defined as “a complex of institutions investment and practices with established links between the demand for and supply of different types of capital gains”

Question 7.
What are the components of unorganised sectors?
Answer:
The Indian financial system can be broadly classified into organised and unorganised sectors. The unorganised sector consists of money lenders, indigenous bankers, etc.

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Tamilnadu Samacheer Kalvi 7th Maths Solutions Term 3 Chapter 5 Statistics Intext Questions

Exercise 5.1
Try These (Text book Page No. 96)

Question 1.
Collect the height of students of your class. Organise the data in ascending order.
Solution:
Height of 15 students in our class.
130cm, 150 cm, 155 cm, 142 cm, 138 cm, 145 cm, 148 cm, 147 cm, 148cm, 143 cm, 141cm, 152 cm, 147 cm, 139 cm, 155 cm.

Ascending order:
130cm, 138cm, 139cm, 141cm, 142cm, 143cm, 145cm, 147cm, 147cm, 148cm, 148 cm, 150cm, 152 cm, 155cm, 155cm.

Try These (Text book Page No. 97)

Find the Arithmetic Mean or average of the following data.

Question 1.
The study time spent by Kathir in a week is 3 hrs, 4 hrs, 5 hrs, 3 hrs, 4 hrs, 3:45 hrs; 4:15 hrs.
Solution:


mean = 3 : 52 hrs

Question 2.
The marks scored by Muhil in five subjects are 75, 91, 48, 63, 51.
Solution:

Arithmetic Mean = 65.6

Question 3.
Money spent on vegetables for five days is ₹ 120, ₹ 80, ₹ 75, ₹ 95 and ₹ 86.
Solution:

Arithmetic Mean = 91.2

Think (Text book Page No. 99)

Check the properties of arithmetic mean for the example given below:

Question 1.
If the mean is increased by 2, then what happens to the individual observations.
Solution:
Given number are 3, 6, 9, 12, 15

If mean is increased by 2 then,

Sum of observations = 5 × 11 = 55
Difference in sum = 55 – 45 = 10
∴ Each number is increased by 2 if the mean is increased by 2.

Question 2.
If first two items are increased by 3 and last two items are reduced by 3, then what will be the new mean?
Solution:
If the first two items is increased by 3, then the numbers will be 3 + 3, 6 + 3 ⇒ 6, 9.
If last two numbers are decreased by 3, then the numbers will be 12 – 3, 15 – 3 ⇒ 9,12.

= \(\frac { 45 }{ 5 } \) = 9
There is no change in the mean.

Exercise 5.2
Try These (Text book Page No. 101)

Question 1.
Find the mode of the following data. 2, 6, 5, 3, 0, 3, 4, 3, 2, 4, 5, 2
Solution:
Arranging the numbers in ascending order we get 0, 2, 2, 2, 3, 3, 3, 4, 4, 5, 5, 6
Since 2 and 3 occurs the maximum of 3 times. So mode of this data is 2 and 3.

Question 2.
Find the mode of the following data set. 3, 12, 15, 3, 4, 12, 11, 3, 12, 9, 19.
Solution:
Arranging the given data in ascending order : 3, 3, 3, 4, 9,11, 12, 12,12, 15, 19.
The data 3 and 12 occurs the maximum of 3 times.
So mode of this data is 3 and 12.

Question 3.
Find the mode of even numbers within 20.
Solution:
Even numbers within 20 are 2, 4, 6, 8, 10, 12, 14, 16, 18.
There is no mode for this data.

Think (Text book Page No. 102)

Question 1.
A toy factory making variety of toys for kids, wants to know the most popular toy liked by all the kids. Which average will be the most appropriate for it?
Solution:
Mode.

Question 2.
Is there a mode exists between the odd numbers from 20 to 40? Discuss.
Solution:
Odd number between 20 to 40 are 21, 23, 25, 27, 29, 31, 33, 35, 37, 39.
As all numbers occurs only once there is no mode for this data.

Think (Text book Page No. 103)

Question 3.
Which average will be most aprropriate for the companies producing the following goods? why?
(i) Diaries and notebooks
(ii) School bags
(iii) Jeans and T-shirts.
Solution:
for all the above data mode will be more appropriate.

Exercise 5.3
Try These (Text book Page No. 106)

Question 1.
Find the median of 3, 8, 7, 8,4, 5, 6.
Solution:
Arranging in ascending order: 3, 4, 5, 6, 7, 8, 8.
Here n = 7, which is odd.

Hence the median is 6.

Question 2.
Find the median: 11, 14, 10, 9, 14, 11, 12, 6, 7, 7.
Solution:
Arranging in ascending order: 6, 7, 7, 9, 10, 11, 11, 12, 14, 14
Here n = 10, which is even.

Think (Text book Page No. 108)

Complete the table given below and observe it to answer the following questions.

Solution:

Question 1.
Which are all the series having common mean and median?
Solution:
Solution:
A, B and C.

Question 2.
Why median is same for all the 4 series?
Solution:
Since the middle value is 100.

Question 3.
How mean is unchanged in the series A, B and C ?
Solution:
The difference between the given numbers are equal.

Question 4.
What change is to be made in the data, so that mean and median of ‘D’ series is equal to other series?
Solution:
If 99 becomes 0 or 200 becomes 101 then mean becomes 100.

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Tamilnadu Samacheer Kalvi 7th Maths Solutions Term 3 Chapter 5 Statistics Ex 5.4

Miscellaneous Practice problems

Question 1.
Arithmetic mean of 15 observations was calculated as 85. In doing so an observation was wrongly taken as 73 for 28. What would be correct mean?
Solution:

85 × 15 = sum of 15 observations
1275 = sum of 15 observations
Wrong observation = 73
Correct observation = 28

Correct mean = 82

Question 2.
The median of 25,16,15,10, 8, 30.
Solution:
Arranging is ascending order : 8, 10, 15, 16, 25, 30
Here n = 6, even

∴ Median = 15.5

Question 3.
Find the mode of 2, 5, 5, 1, 3, 2, 2, 1, 3, 5, 3.
Solution:
Arranging the data in ascending order: 1, 1, 2, 2, 2, 3, 3, 3, 5, 5, 5
Here 2, 3 and 5 occurs 3 times each.
Which is the maximum number of times.
∴ Mode is 2, 3 and 5.

Question 4.
The marks scored by the students in social test out of 20 marks are as follows.
12, 10, 8, 18, 14, 16. Find the mean and the median?
Solution:
Arranging the given data in ascending order: 8, 10, 12, 14, 16, 18.

There are n = 6 observations, which is even

Question 5.
The number of goals scored by a football team is given below.
Find the mode and median for the data of 2 ,3, 2, 4, 6, 1, 3, 2, 4, 1, 6.
Solution:
Arranging the given data in ascending order: 1, 1, 2, 2, 2, 3, 3, 4, 4, 6, 6
Clearly 2 occurs at the maximum of 3 times and so mode = 2
Here number of data of data n = 11, odd.
∴ Median = (\(\frac { n+1 }{ 2 } \))^th term
= (\(\frac { 11+1 }{ 2 } \))^th
term = (\(\frac { 12 }{ 2 } \))^th term
= 6^th term
Median = 3

Question 6.
Find the mean and mode of 6, 11, 13, 12, 4, 2.
Answer:
Arranging is ascending order : 2, 4, 6, 11, 12, 13

Mean = \(\frac { 48 }{ 6 } \) = 8
All observation occurs only once and so there is no mode for this date.

Challenge Problems

Question 1.
The average marks of six students is 8. One more student mark is added and the mean is still 8. Find the student mark that has been added.
Solution:

Sum of observation = 6 × 8 = 48
If one more mark is added then number of observations = 6 + 1 = 7
Let the number be x
Still average = 8
∴ 8 = \(\frac { 48+x }{ 7 } \)
48 + x = 7 × 8
48 + x = 56
48 + x = 56 – 48
x = 8
∴ The number that is added = 8

Question 2.
Calculate the mean, mode and median for the following data: 22, 15, 10, 10, 24, 21.
Solution:
Arranging in ascending order: 10, 10, 15, 21, 22, 24

Here n = 6, even

∴ Median = 18
Clearly the data 10 occurs maximum number of times and so 10 is the mode.
∴ Mode = 10

Question 3.
Find the median of the given data: 14, -3, 0, -2, -8, 13, -1, 7.
Solution:
Arranging the data is ascending order: -8, -3, -2, -1, 0, 7, 13, 14
Here number of data n = 8, even
∴ Median

∴ Median = – 0.5

Question 4.
Find the mean of first 10 prime numbers and first 10 composite numbers.
Solution:
First 10 prime numbers are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29

Mean = 12.9
Mean of first 10 prime numbers = 12.9
First 10 composite numbers are 4, 6, 8, 9, 10, 12, 14, 15, 16, 18

Mean of first 10 composite numbers = 11.2

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Tamilnadu Samacheer Kalvi 7th Maths Solutions Term 3 Chapter 5 Statistics Ex 5.3

Question 1.
Fill in the blanks.

(i) The median of the data 12, 14, 23, 25, 34, 11, 42, 45, 32, 22, 44 is ________
(ii) The median of first ten even natural numbers is ________
Answers:
(i) 25
(ii) 11

Question 2.
Find the median of the given data: 35, 25, 34, 36, 45, 18, 28.
Solution:
Arranging the given data in ascending order 18, 25, 28, 34, 35, 36, 45.
Here the number of observations n = 7, which is odd.

Hence Median = 34

Question 3.
The weekly sale of motor bikes in a showroom for the past 14 weeks given below.
10, 6, 8, 3, 5, 6, 4, 7, 12, 13, 16, 10, 4, 7.
Find the median of the data.
Solution:
Arranging the given data in ascending order 3, 4, 4, 5, 6, 6, 7, 7, 8, 10, 10, 12, 13, 16.
Here number of data n = 14, which is even


∴ Median = 7

Question 4.
Find the median of the 10 observations 36, 33, 45, 28, 39, 45, 54, 23, 56, 25.
If another observation 35 is added to the above data, what would be the new median?
Solution:
Arranging the given 10 observations in ascending order 23, 25, 28, 33, 36, 39, 45, 45, 54, 56.
Here number of data n = 10, which is even

∴ Median = 37.5
If 35 is added to the above data then it will be the 5th term then number of data n = 11, odd
∴ Median = (\(\frac { n+1 }{ 2 } \))^th term = (\(\frac { 11+1 }{ 2 } \))^th term
= (\(\frac { 12 }{ 2 } \))^th term = 6th term
New median = 36

Objective Type Questions

Question 1.
If the median of a, 2a, 4a, 6a, 9a is 8, then find the value of a is
(i) 8
(ii) 6
(iii) 2
(iv) 10
Answer:
(iii) 2
Hint:

Median = 4a = 8
a = 2

Question 2.
The median of the data 24, 29, 34, 38, 35 and 30, is ________
(i) 29
(ii) 30
(iii) 34
(iv) 32
Answer:
(iv) 32
Hint:

Median = \(\frac { 30+34 }{ 2 } \)
= \(\frac { 64 }{ 2 } \)
= 32

Question 3.
The median first 6 odd natural numbers is
(i) 6
(ii) 7
(iii) 8
(iv) 14
Answer:
(i) 6
Hint:

Median = \(\frac { 5+7 }{ 2 } \)
= \(\frac { 12 }{ 2 } \)
= 6

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Tamilnadu Samacheer Kalvi 7th Maths Solutions Term 3 Chapter 5 Statistics Ex 5.2

Question 1.
Find the mode of the following data. 2, 4, 5, 2, 6, 7, 2, 7, 5,4, 8, 6, 10, 3, 2, 4, 2.
Solution:
Arranging the given data in ascending order 2, 2, 2, 2, 2, 3, 4, 4, 4, 5, 5, 6, 6, 7, 7, 8, 10.
Here the number 2 occurs 5 times which is the maximum
∴ Mode of this data is 2.

Question 2.
The number of points scored by a Kabaddi team in 20 matches are
36, 35, 27, 28, 29, 31, 32, 31, 35, 38, 38, 31, 28, 31, 34, 33, 34, 31, 30, 29.
Find the mode of the points scored by the team.
Solution:
Arranging the given data in ascending order
27, 28, 28, 29, 29, 30, 31, 31, 31, 31, 31, 32, 33, 34, 34, 35, 35, 36, 38, 38.
Here the number 31 occurs 5 times which is the maximum.
∴ Mode of this data is 31.

Question 3.
The ages (in years) of 11 cricket players are given below.
25, 36, 39,38 40, 36, 25, 25, 38, o 26,36. Find the mode of the ages.
Solution:
Arranging the ages is ascending order: 25, 25, 25, 26, 36, 36, 36, 36, 38, 38, 39, 40.
The ages (in years) of 11 cricket players are given below. 25, 36, 39,38 40, 36, 25, 25, 38, o 26,36. Find the mode of the ages.
Arranging the ages is ascending order: 25, 25, 25, 26, 36, 36, 36, 36, 38, 38, 39, 40.
25 and 36 occurs maximum number of times.
∴ Mode is 25 and 36.

Question 4.
Find the mode of the following data.
12, 14, 12, 16, 15, 13, 14, 18, 19, 12, 14, 15, 16, 15, 16, 16, 15, 17, 13, 16, 16, 15, 15, 13, 15, 17, 15, 14, 15, 13, 15, 14.
Solution:
Tabulating the given data

The highest frequency is 10 which corresponds to the value 15.
Hence mode of this data is 15.

Objective Type Questions

Question 1.
The colors used by the six students for drawing is blue, orange, yellow, white, green and blue then the mode is ________
(i) blue
(ii) green
(iii) white
(iv) yellow
Answer:
(i) blue

Question 2.
Find the mode of data 3, 6, 9, 12, 15.
(i) 1
(ii) 2
(iii) 3
(iv) No mode
Answer:
(iv) No mode

Question 3.
Find the modes of the data 2, 1, 1, 3, 4, 5, 2.
(1) 1 and 5
(2) 2 and 3
(3) 2 and 1
(4) 1 and 4
Answer:
(3) 2 and 1

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Tamilnadu Samacheer Kalvi 7th Maths Solutions Term 3 Chapter 6 Information Processing Additional Questions

Exercise 6.1

Question 1.
Draw a flowchart to calculate simple interest for your bank deposit.
Solution:
Flow Chart:

Algorithm:
(i) Read principal
(ii) Read years
(iii) Read rate of interest per year
(iv) Calculate the interest with formula Interest = Principal × Years × Rate/100
(v) Print Interest

Question 2.
Draw a flowchart to convert the given Fahrenheit temperature to Celsius. Formula is C = \(\frac { 5 }{ 9 } \) × (F – 32)
Solution:
Algorithm:
(i) Read temperature in Fahrenheit
(ii) Calculate temperature in Celsius using formula C = \(\frac { 5 }{ 9 } \) × (F – 32)
(iii) Print C

Students can Download Maths Chapter 5 Statistics Ex 5.1 Questions and Answers, Notes Pdf, Samacheer Kalvi 7th Maths Book Solutions Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus and score more marks in your examinations.

Tamilnadu Samacheer Kalvi 7th Maths Solutions Term 3 Chapter 5 Statistics Ex 5.1

Question 1.
Fill in the blanks.

1. The mean of first ten natural numbers is ________
2. If the average selling price of 15 books is ₹ 235, then the total selling price is ________
3. The average of the marks 2, 9, 5, 4, 4, 8, 10 is ________
4. The average of integers between -10 to 10 is ________

Answers:

1. 5.5
2. 3,525
3. 6
4. 0

Question 2.
Ages of 15 students in 8th standard is 13, 12, 13, 14, 12, 13, 13, 14, 12, 13, 13, 14, 13, 12, 14.
Find the mean age of the students.
Solution:

= \(\frac { 195 }{ 15 } \) = 13
Mean age of the students = 13

Question 3.
The marks of 14 students in a science test out of 50 are given below. 34, 23, 10, 45, 44, 47, 35, 37, 41, 30, 28, 32, 45, 39 Find
(i) the mean mark.
(ii) the maximum mark obtained.
(iii) the minimum mark obtained.
Solution:

Mean marks = 35
(ii) Maximum mark obtained = 47
(iii) Minimum mark obtained = 10

Question 4.
The mean height of 11 students in a group is 150 cm. The heights of the students are 154 cm, 145 cm, Y cm, Y + 4 cm, 160 cm, 151 cm, 149 cm, 149 cm, 150 cm, 144 cm and 140 cm. Find the value of Y and the heights of two students.
Solution:

150 = \(\frac { 1342+Y+Y+4 }{ 11 } \)
150 = \(\frac { 1346+2Y }{ 11 } \)
150 × 11 = 1346 + 2Y
1650 = 1346 + 2Y
2Y = 1650 – 1346 = 304
Y = \(\frac { 304 }{ 2 } \) = 152
Height of two students are Y and Y + 4
⇒ 152 and 152 + 4
⇒ 152 cm and 156 cm

Question 5.
The mean of runs scored by a cricket team in the last 10 innings is 276. If the scores are 235, 400, 351, x, 100, 315, 410,165, 260, 284, then find the runs scored in the fourth innings.
Solution:
Let the runs scored in the fourth innings be x.

276 × 10 = 2520 + x
2760 = 2520 + x
x = 2760 – 2520 = 240
∴ Number of runs scored in the fourth innings = 240

Question 6.
Find the mean of the following data. 5.1, 4.8, 4.3, 4.5, 5.1, 4.7, 4.5, 5.2, 5.4, 5.8, 4.3, 5.6,
Solution:

Mean = 5

Question 7.
Arithmetic mean of 10 observations was found to be 22. If one more observation 44 was to be added to the data, what would be the new mean?
Solution:
Arithmetic mean of 10 observation is 22.

= \(\frac { 220+44 }{ 11 } \) = \(\frac { 264 }{ 11 } \) = 24
New mean = 24

Objective Type Questions

Question 1.
________ is a representative value of the entire data.
(i) Mean
(ii) range
(iii) minimum value
(iv) maximum value
Answer:
(i) Mean

Question 2.
The mean of first fifteen even numbers is ________
(i) 4
(ii) 16
(iii) 5
(iv) 10
Answer:
(ii) 16
Hint:

Question 3.
The average of two numbers are 20. One number is 24, another number is ________
(i) 16
(ii) 26
(iii) 20
(iv) 40
Ans:
(i) 16
Hint:
\(\frac { x+y }{ 2 } \) = 20
x + y = 40
24 + y = 40
y = 40 – 24 = 16

Question 4.
The mean of the data 12, x, 28 is 18. Find the value of x.
(i) 18
(ii) 16
(iii) 14
(iv) 22
Answer:
(iii) 14
Hint:
\(\frac { 12+x+28 }{ 3 } \) = 18
x + 40 = 54
x = 14