How can I tell if 3360 is divisible by 24 without doing division?

Answer 1

See if 3360 contains prime factors that can be multiplied together to get 24.

But dividing by 24 directly is easier.

3360 = 336*5*2
= 112*3*5*2
= 8*7*2*3*5*2

There is a factor of 8*3 = 24 in that group

Answer 2

Go back to school or use a calculator?