What is the greastest common factor for 38 and 45?

Answer 1

The factors of 33 are:

1, 3, 11, 33

The factors of 45 are:

1, 3, 5, 9, 15, 45

The common factors are:

1, 3

The Greatest Common Factor (GCF) is:

3

Answer 2

2 x 19 = 38

3 x 3 x 5 = 45

No common prime factors; the GCF is 1.

Answer 3

3 x 3 x 5 = 45

2 x 2 x 3 x 5 = 60

3 x 5 = 15, the GCF

Answer 4

The greatest common factor of both numbers is 15

Answer 5

The GCF is 1.

Answer 6

2 x 3 x 3 = 18

3 x 3 x 5 = 45