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# What is the greatest common factor of 21 and 49?

Updated: 4/28/2022

Wiki User

7y ago

The greatest common factor of 21 and 49 is 7.

21 = 3 x 7, 49 = 7 x 7 so GCF = 7.

Wiki User

7y ago

Wiki User

10y ago

It is: 7

Wiki User

14y ago

7.

Anonymous

Lvl 1
3y ago

7

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Q: What is the greatest common factor of 21 and 49?
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The GCF is 7.

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