Answer:
Factors of 8 and 20
The gcf of 8 and 20 can be obtained like this: The factors of 8 are 8, 4, 2, 1. The factors of 20 are 20, 10, 5, 4, 2, 1. The common factors of 8 and 20 are 4, 2, 1, intersecting the two sets above. In the intersection factors of 8 ∩ factors of 20 the greatest element is 4. Therefore, the greatest common factor of 8 and 20 is 4.
Explanation:
Hope it helped you!