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Find the GCF of 45, 27, 72

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The GCF of 45, 27, and 72 is 9.

GCF is an acronym for “Greatest Common Factor.” To determine the greatest common factor of two or more numbers, we can list the factors of each number:

45: 1, 3, 5, 9, 15, 45

27: 1, 3, 9, 27

72: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72

Between these factors, the greatest number that all of them have in common is 9. For that reason, the GCF is 9.

The GCF of 45, 27, and 72 is 9.
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