Question

Find which of the following numbers are divisible by 11 :

(i) 2563 (ii) 8307 (iii) 95635

Answer 1

$\text{A number is divisible by 11 if the difference of the sum of digits at the odd places and sum of the digits at even places is zero or divisible by 11. So,}\text{2563 is divisible by 11.}$