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Factors of 21: 1, 3, 7, 21

Factors of 60: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60

GCF (21, 60) = 3

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12y ago

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Factors of 60: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60

Factors of 27: 1, 3, 9, 27

GCF (60, 27) = 3

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12y ago
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The GCF is 1.

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Wiki User

9y ago
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It is: 4

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Wiki User

10y ago
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Q: What is the greatest common factor of 21 and 61?
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