Question

"Question 5 Find the values of the letter in the following and give reasons for the steps involved.

A B
x 3
__________
C A B
__________

Class 8 Playing with Numbers Page 256"

Answer 1

Numbers can be written in general form. Hence, a two digit number ab will be written as ab = 10a + b.

The general form of numbers is helpful in solving puzzles or number games.

Rules to be followed while solving the puzzles:. Each letter in the puzzle must stand for just one digit. Each digit must be represented by just one letter. 2. The first digit of a number cannot be zero.

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Solution

Put B = 0,

we get 0 × 3 = 0.

And A = 5, then 5 ×3 = 15

 A = 5 & C = 1

Hence , A = 5, B = 0 & C = 1

A B
x 3
__________
C A B
__________



    5 0
    x 3
__________
  1 5 0
__________

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Hope this will help you..