Tick (✓) the correct answer

Question:

Tick (✓) the correct answer

If 1A2B5 is exactly divisible by 9, then the least value of (A + B) is

(a) 0

(b) 1

(c) 2

(d) 10

Solution:

(b) 1

For a number to be divisible by 9, the sum of the digits must also be divisible by 9.

$1+A+2+B+5=(A+B)+8$

The number will be divisible by 9 if $(A+B)=1$.

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