Question

Test the divisibility of following numbers by 11

9020814

Answer 1

We know that, a number is divisible by 11, if the difference of sum of digits at even and odd places is either zero or divisible by 11.

We have, 9020814

Sum of digits at even places = 1 + 0 + 0 = 1

Sum of digits at odd places from the right = 4 + 8 + 2 + 9 = 23

So, difference = 23 – 1 = 22  .....(Divisible by 11)

Hence, it is divisible by 11.