Which is the gcf of 42 and 18?

Answer 1

The factors of 18 are:

1, 2, 3, 6, 9, 18

The factors of 42 are:

1, 2, 3, 6, 7, 14, 21, 42

The common factors are:

1, 2, 3, 6

The Greatest Common Factor (GCF) is:

6

Answer 2

The GCF is 6.

Answer 3

6