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21, for a common factor you would need more than 1 number

ex: gcf between 21 and 14?

7

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βˆ™ 13y ago
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βˆ™ 7y ago

You need at least two numbers to find a GCF.

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βˆ™ 13y ago

A greatest common factor is used to compare two or more numbers to each other - a single number cannot have a Greatest Common Factor.

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βˆ™ 9y ago

The GCF is 1.

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βˆ™ 9y ago

The GCF is 3.

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βˆ™ 8y ago

The GCF is 1.

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Q: What is the greatest common divisor of 21?
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