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The GCF is 7.

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12y ago
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9y ago

The common factors are: 1, 7

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Q: What is the common factor of 21 and 28?
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The Greatest Common Factor of 15, 21, 28: 1


What is the highest common factor of 28 and 21?

it is 7


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What is he greatest common factor of 21 and 28?

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