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Q: What are the common factors of 15 and 21?

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The factors of 105 are: 1, 3, 5, 7, 15, 21, 35, 105The factors of 147 are: 1, 3, 7, 21, 49, 147The common factors are: 1, 3, 7, 21The Greatest Common Factor (GCF) is: 21

The common factors of 15 and 36 are: 1, 3.

40 and 21 have no common prime factors

The factors of 105 are:1, 3, 5, 7, 15, 21, 35, 105The factors of 441 are:1, 3, 7, 9, 21, 49, 63, 147, 441The common factors are:1, 3, 7, 21The Greatest Common Factor (GCF) is:21

Common factors of 15, 35, and 45 are: 1 and 5.

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The hcf is 1

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The greatest common factor of 15 and 21 is 3The factors of 15 are: 1, 3, 5, 15The factors of 21 are: 1, 3, 7, 21The common factors are: 1, 3The Greatest Common Factor (GCF) is: 3

The GCF is 3.

They have only one and it is 1

The factors of 21 are: 1, 3, 7, 21The factors of 45 are: 1, 3, 5, 9, 15, 45The common factors are: 1, 3The Greatest Common Factor (GCF) is: 3

The factors of 15 are: 1, 3, 5, 15The factors of 21 are: 1, 3, 7, 21The common factors are: 1, 3

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