Answer :
The gcf of 20 and 84 is 4.
Factors of 20:
1, 2, 4, 5, 10, 20
Factors of 84:
1, 2, 3, 4, 6, 7, 12, 21, 28, 42, 84
GCF of 20 and 84 is 4.
Factors of 20:
1, 2, 4, 5, 10, 20
Factors of 84:
1, 2, 3, 4, 6, 7, 12, 21, 28, 42, 84
GCF of 20 and 84 is 4.