Question

What is the common factor of 9 and 12

Answer 1

The common factor of 9 and 12 is 3

Explanation:

1. List all the factors of both numbers

9:1,3,9

12:1,2,3,4,6,12

Answer 2

3

We found the factors and prime factorization of 9 and 12. The biggest common factor number is the GCF number. So the greatest common factor 9 and 12 is 3.