Question

The set of even numbers that can be be divided by 3 is

Answer 1

6, 12, 18, 24, 30, 36, 42, 48, 54, 60, ect

Explanation:

keep adding 3+3, then 3+6 and so on, then when you go as far as you want, look back at all the even numbers

Answer 2

a number is divisible by 3 if the sum of its digits is divisible by 3. 375, for instance, is divisible by 3 since sum of its digits (3+7+5) is 15. And 15 is divisible by 3. 1+2=3 and 3 is divisible by 3