The factors of 72 are:
1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72
The factors of 100 are:
1, 2, 4, 5, 10, 20, 25, 50, 100
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The factors of 60 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60 The factors of 70 are: 1, 2, 5, 7, 10, 14, 35, 70 The GCF of 60 and 72 is 12.
1 and 2, the GCF.
72's factors are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36,72 ... 7 would go into 70 and 77 but NOT 72
Factor trees create prime numbers. Prime numbers are positive. Since the prime factors of negative 72 are the same as positive 72, you might as well do positive 72. 72 36,2 18,2,2 9,2,2,2 3,3,2,2,2
Factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36. The factors of 72 are 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, and 72. All of the factors of 36 are also factors of 72.