Question

I need help with my HW
How can you tell without doing division if a number is a multiple of 6?

Answer 1

The prime factors of 6 are 2 and 3. So for a number to be divisible by 6, it must also be divisible by 2 and 3. So you need to check if the number is even and then check if the sum of the digits is divisible by 3.

Explanation: