**Problem 1 – Divisibility rule for 11**

Check whether 32857 is divisible by 11 ?

**a) Yes**

b) No

A number is divisible by 11 if the difference between the sum of the digits at odd place and the digits at even place is either 0 or divisible by 11.

In, the given number 32857

Sum of the digits at even places:

5 + 2 = 7

Sum of the digits at odd places:

7 + 8 + 3 = 18

Difference between sum of digits at even and odd places = 18 – 7 = 11 ( Which is divisible by 11 )

Therefore, 32857 is also divisible by 11