Question

The set
of whole number less than 20

Answer 1

Whole numbers less than 20 are 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1. How to know if they are divisible by 3? Add the numbers, and if the sum is divisible by 3.

Answer 2

maybe 3, 6, 9, 12, 15, 18?

Explanation:

sorry if this doesn't help but I hope someone else can help you! good luck