Question

Find the values of the letters in each of the following and give reasons for the steps involved.
EXERCISE 16.1
3 A
+2 5
= B 2​

Answer 1

Answer:

Find the values of the letters in each of the following and give reasons for the steps involved.

Ans. There are two letters whose values are to be found out. Study the addition in the ones column, i.e., from A + 5 we get 2, i.e., the number whose ones digit is 2.

For the to happen, A must be 7

(∴ A + 5 = 7 + 5 = 12).

So for the addition in tens column, we have

1 + 3 + 2 = B ⇒ B = 6

So, the puzzle has been decoded as

∴ The possible values of A and B are 7 and 6 respectively.