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GCF(36, 42, 72) = 6
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The GCF is 6.
The GCF of 36, 42, and 54 is 6.
The GCF is 3.
The Greatest Common Factor of 28, 42, 63: 7
The Greatest Common Factor (GCF) is: 6
21 itself is the greatest common integral factor, since 21 X 2 = 42.