Students can Download Maths Chapter 4 Information Processing Intext Questions and Answers, Notes Pdf, Samacheer Kalvi 8th 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 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions

Exercise 4.1
Activity 1. (Text book Page no. 83)

Question 1.
Draw a Golden Spiral using Fibonacci squares.
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 1
Answer:
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 2

Activity – 2 (Text book Page no. 85)

Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions

Question 1.
Using the given Table I, find the pattern, Answer the following questions and colour the values in the given Table II. One is done for you.
Table I
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 3
1. Where are the even Fibonacci Numbers?
Colour both the term n and where F(n) is even in
Do you find any pattern?
Every Third Fibonacci number is a multiple of 2(even).
i.e. a multiple of F(3) or 2 = F(3).

2. Where there are Fibonacci numbers which are multiple of 3?
Colour both the term n and where F(n) is multiple of 3 in red.
Write down the pattern you find
Every 4th Fibonacci number is a multiple of 3.
i.e. a multiple of F(4) or 3 = F(4).

3. What about the multiple of 5?
Colour both the term n and where F(n) is multiple of 5 in 1
Write down the pattern you find.
Every 5th Fibonacci number is a multiple of F(5) or 5 = F(5)
i.e. a multiple of F(4) or 3 = F(4)

4. What about the multiple of 8?
Colour both the term n where F(n) is multiple of 8 in green.
Write down the pattern you find.
Every 6th Fibonacci number i.e. a multiple of F(6) or 8 = F(6)

Table II
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 4
Solution:
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 5
R – Red
Y – Yellow
B – Blue
G – Green

Exercise 4.3
Try This (Text book Page no. 94)

Question 1.
Convert cipher code written in the school panel board as given in figure below.
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 6
Solution:
Cipher code given.
EAPLKEAPUSG UG NWP AJWYP NYEJKXG KOYAPUWNG, SWEFYPAPUWNG WX AVCWXUPLEG; UP UG AJWYP YNBKXGPANBUNC – QUVVAE FAYV PLYXGPWN
Mathematics is not about numbers, equations, computations or algorithms, it is about understanding. – William Paul Thurston

Activity 3. (Text book Page No. 95)

Code 1: Pigpen

Question 1.
Fill in the blank boxes and decode

The Pigpen code looks like meaningless writing, but it is quite easy to catch on to. Each letter is represented by the part of the “Pigpen” that surrounds it.

The first code uses the following key. To complete the code, you need to work out how to use the key to decode the message.
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 7
Solution:
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 8
To decode
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 9

Try These (Text book Page no. 97)

Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions

Question 1.
Use Pigpen Cipher code and write the code for your name ………. chapter names

(i) LIFE MATHEMATICS
(ii) ALGEBRA
(iii) GEOMETRY
(iv) INFORMATION PROCESSING

Solution:
For Pigpen, we should first construct the Criss Cross pattern & then fill with alphabets.
Step 1:
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 10
Step 2:
Fill the above with all the alphabets from A to Z.
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 11
Step 3:
So, the secret code is got by the outline of each letter in the above patterns. So for
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 12
Similarly for all the others. Therefore Pigpen code is
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 13
Hence if your name is RAM, the corresponding pattern is
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 14
Let us now write the given words with Pigpen code.
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 15

Question 2.
Decode the following Shifting and Substituting secret codes given below. Which one is a easier for you?
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 16
Solution:
Decode using shifting method. Let us shift & see by trial & error method.
Let us substitute ‘b’ for ‘a’, V for ‘b’ & so on.
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 17
Message: M N S G H M F H R H L O N R R H A K D
Decoded text: NOTHING IS IMPOSSIBLE
Decode using substituting method:
Samacheer Kalvi 8th Maths Solutions Term 2 Chapter 4 Information Processing Intext Questions 18
We find that Pigpen code has been used, by substituting for the symbols from the table that we constructed earlier, we go the message.
NOTHING IS IMPOSSIBLE

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