Which of the following numbers is divisible by 11?

Correct option is C

Concept Used:

A number is divisible by 11 if the sum of digits in odd positions minus sum of digits in even positions is divisible by 11.

Solution:

Checking each option:

A) 3273 → 3 - 2 + 7 - 3 = 5 (Not divisible by 11)

B) 4836 → 4 - 8 + 3 - 6 = -7 (Not divisible by 11)

C) 5621 → 5 - 6 + 2 - 1 = 0 (Divisible by 11)

D) 2987 → 2 - 9 + 8 - 7 = -6 (Not divisible by 11)