What is the greatest common factor of 16 and 72?

Answer 1

The greatest common factor of 16 and 72 is 8.
8
16

8,2

4,2,2

2,2,2,2

72

36,2

18,2,2

9,2,2,2

3,3,2,2,2

2 x 2 x 2 = 8, the GCF
The greatest common factor of 16 and 72 is 8.
The GCF is 8.

Answer 2

8