Correct Answer - Option 4 : 8
Concept:
The divisibility rule of 3 states that a number is completely divisible by 3 if the sum of its digit is divisible by 3 or multiple of 3.
Calculation:
⇒ 7 + A + 3 = 10 + A (Possible value of A is 2, 5, 8)
⇒ 136 + 5B7 = 7A3 (Possible value of B is 6, 7, 8, 9)
⇒ For A = 2, B = 8
⇒ 7 + 2 + 3 = 12, (Which is divisible by 3 or multiple of 3)
⇒ The value of B = 8
∴ The required result will be 8.