Question

1 3 A
+ 5 A 2
A 0 9

In the given summation, the value of A is:

• A.
  5
• B.
  7
• C.
  6
• D.
  8

Answer 1

The correct option is B

7
1 3 A
+ 5 A 2
A 0 9

Looking at the ones column first, A + 2 = 9, so value of A should be some digit less than 8.
Value of A should be 7 as 7 + 2 = 9

Let's check if this value of A satisfies the entire sum.
1 3 7
+ 5 7 2
7 0 9
It is clear that by taking A as 7,
137 + 572 = 709

So, option (b) is correct.