Question

What is a common factor of 32 and 36?

Answer 1

32: 1, 2, 4, 8, 16, 32
36: 1, 2, 3, 4, 6, 6, 9, 18, 36
Some common factors are 1, 2, 4
The Greatest common factor is 4

Answer 2

Common Factors of 32 and 36 
factors of 32 = 1, 2, 4, 8, 16 and 32
factors of 36 = 1, 2, 3, 4, 6, 9, 18, 36
So the common factors of 32 and 36 are 1, 2 and 4.
The greatest common factor is 4