Question

Find the greatest common factor of 9 and 14

Answer 1

The biggest common factor number is the GCF number. So the greatest common factor 9 and 14 is 1.

Answer 2

It's one, because if you take the prime factorization of both 9 and 14 only 1 comes out more than once in the factor tree.

The factors of 9 are 1, and 3

The Factors of 14 are 1, 2 and 7

Both 9 and 14 have 1 as a factor. It's the greatest common factor.