What is the GCF of 72 and 96?
Find the prime factorizations: 72 = 2 x 2 x 2 x 3 x 3 96 = 2 x 2 x 2 x 2 x 2 x 3 They have in common three factors of 2 and one factor of 3: 2 x 2 x 2 x 3 = 24, the GCF