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Subjects>Math>Basic Math

What is the greatest common factor of 15 and 21?

Wiki User

∙ 2016-03-15 12:53:51

Best Answer

The greatest common factor of 15 and 21 is 3

The factors of 15 are: 1, 3, 5, 15

The factors of 21 are: 1, 3, 7, 21

The common factors are: 1, 3

The Greatest Common Factor (GCF) is: 3

Wiki User

∙ 2016-03-15 12:53:51

This answer is:

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