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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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9y ago

3

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Q: What is the greatest common factor of 20 and 54?
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The greatest common factor (GCF) is often also called the greatest common divisor (GCD) or highest common factor (HCF). Keep in mind that these different terms all refer to the same thing: the largest integer which evenly divides two or more numbers.The greatest common factor of 20, 30, and 54 is 2