Question

What's the GCF of 12,40, and 45

Answer 1

Least common factor=2 x 2 x 2 3 x 3 x 5
answer=360

Answer 2

GCF stands for Greatest Common Factor 
12 can be divided by 1, 2, 6, 3, 4, 
40 can be divided by 1, 2, 4, 10, 20, 5, 8 
45 can be divided by 1, 3, 15, 9, 5
So out of all those factors the greatest factor is 2