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The factors of 15 are: 1, 3, 5, 15

The factors of 45 are: 1, 3, 5, 9, 15, 45

The common factors are: 1, 3, 5, 15

The Greatest Common Factor (GCF) is: 15

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13y ago
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8y ago

The GCF is 15.

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7y ago

The GCF is 15

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Q: What are the greatest common factor of 15 45 and 75?
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