Question

Which list shows all the factors of 18?

1, 2, 3, 4, 6, 9, 18
1, 2, 3, 6, 9, 18
2, 3, 4, 6,9
2, 3, 6, 9

Answer 1

I believe it is the second list: 1,2,3,6,9,18

Answer 2

List #2

Explanation:

You can use a factor tree to find all the factors of 18:

18: 1x18, 2x9, 3x6 =1,2,3,6,9,18