Which of the following number is divisible by 11?
Show answer & explanation
Correct answer: C
Explanation
Given:
The number must be divisible by 11.
Divisibility by 11 ⇒ (The difference between the sum of the digits at alternate places) must be 0 or a multiple of 11.
5455 → (5+5) − (4+5) = 10 − 9 = 1 ⇒ Not divisible by 11
5235 → (5+3) − (2+5) = 8 − 7 = 1 ⇒ Not divisible by 11
5126 → (5+2) − (1+6) = 7 − 7 = 0 ⇒ Divisible by 11
7215 → (7+1) − (2+5) = 8 − 7 = 1 ⇒ Not divisible by 11