SSC CPO 2019 PYQ — Question 140

Rule: - If the sum of the digits of a number is divisible by 3, the number is also divisible by 3

So

= 1 + 5 + 6 + 3 + 2 + 4 + 1 + 2 + 3 + 4 + 3 + 5 + 1

= 40

So this number is not divisible by 3

Rule:- If the sums of digits at odd and even places are equal or differ by a number divisible by 11, then the number is also divisible by 11

= 1 + 6 + 2 + 1 + 3 + 3 + 1

= 17

&

= 5 + 3 + 4 + 2 + 4 + 5

= 23

So

= 23 - 17

= 6

So

this is not divisible by 11