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The factors of 6 are:

1, 2, 3, 6

The factors of 15 are:

1, 3, 5, 15

The factors of 21 are:

1, 3, 7, 21

The common factors are:

1, 3

The Greatest Common Factor (GCF) is:

3

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12y ago

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More answers

The GCF is 3.

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12y ago
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GCF(15, 21, 30) = 3.

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8y ago
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Q: What is the GCF 0f 3 15 21?
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