715+716+ 717 is divisible by which of the following given numbers?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. 3.
715 + 716 + 717
= 715 (1 + 71 + 72)
= 715 (1 + 7 + 49)
= 715 × 57
= 715 × 3 × 19
Therefore, the given number is divisible by 3.