Answer:
24 is GCF
Step-by-step explanation:
48 = 1, 2, 3, 4, 6, 8, 12, 16, 24, 48
72 = 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
Factors they have in common: 1, 2, 3, 4, 6, 8, 12, 24
24 is the greatest factor they have in common; therefore, 24 is the greatest common factor, or GCF
