Factors of 18: 1, 2, 3, 6, 9, 18.
Factors of 45: 1, 3, 5, 9, 15, 45.
Factors of 72: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72.
GCF (18, 45, 72) = 9
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The Greatest Common Factor (GCF) is: 9
The GCF is 9.
The GCF is 3.
The answer to this problem is simple, the Greatest Common Factor (GCF) is 27.
90/2 = 45