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b. If 1 2 3 then the secret message

will be decoded as .

(i) 1223113 (ii) 2132311

(iii) 2132113 (iv) 2131223

2. Write 'T' for true and 'F' for false.

a. In a number pyramid, the number in each space is the sum of the
two numbers below it.

b. In the number grid, each grid is replaced by the sum of

the numbers in it.
3. Think and Answer.

a. What is the process of converting a hidden message to a meaningful text?

b. Your friend, Arjun, wrote BAT as TAB; then how will you write the word CAR

using his secret code?

21 st #Critical Thinking
Century
Skills #Creativity
FUN ACTIVITY
1. Complete the given pyramid by entering the missing numbers.

9 5 2 0 3

74 Computer Science (V5.0)-II