Which of the following numbers is divisible by $11$?

Question

Which of the following numbers is divisible by $11$?

Option A — Correct answer

1331

Correct choice.

Option B

23816

Option C

72936

Option D

236784

Explanation

For divisibility by $11$, the difference between the sums of alternate digits must be $0$ or a multiple of $11$. For $1331$, $(1+3)-(3+1)=0$.

Chapter Mock 1: Number System, Simplification and Approximation