Question

Find the highest common factor of 32 and 80

Answer 1

32=2*2*2*2*2=2^5
80=2*2*2*2*5

hcf = 2*2*2*2=2⁴=16

Answer 2

16

Explanation:

The factors of 32 are: 1, 2, 4, 8, 16, 32

The factors of 80 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Then the greatest common factor is 16.