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The greatest common factor of 21 and 54 is 3.

The greatest common factor is the highest number that divides exactly into two or more numbers.

factors of 21: 1, 3, 7, 21

factors of 54: 1, 2, 3, 6, 9, 18, 27, 54

The greatest common factor of 21 and 54 is 3.

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8y ago
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13y ago

The greatest common factor of 20 and 54 is 2.

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13y ago

The Greatest Common Factor (GCF) is: 1

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10y ago

3

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Q: What is the greatest common factor of 20 and 54?
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