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Q: What is the greatest common factor of 71 and 15 and 21?

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The Greatest Common Factor of 15, 21, 27: 3

The Greatest Common Factor of 15, 21, 28: 1

what is the greatest common factor of 9,15,and 21

3

3

14 and 21, and 21 and 28 are the number pairs between 15 and 30 that have 7 as their greatest common factor.

The greatest common factor of 15 and 21 is 3The factors of 15 are: 1, 3, 5, 15The factors of 21 are: 1, 3, 7, 21The common factors are: 1, 3The Greatest Common Factor (GCF) is: 3

The GCF of 3, 15, and 21 is 3.

The GCF of 10, 15, and 21 is 1.

It is: 1

1

The greatest common factor of 21, 36, and 60 is 3

Answer: 3Definition: A factor is a divisor - a number that will evenly divide into another number. The greatest common factor of two or more numbers is the largest factor that the numbers have in common.Method:One way to determine the common factors and greatest common factor is to find all the factors of the numbers and compare them.The factors of 15 are 1, 3, 5, and 15.The factors of 21 are 1, 3, 7, and 21.The factors of 27 are 1, 3, 9, and 27.The common factors are 1 and 3. Therefore, the greatest common factor is 3.

The GCF is 3.

The GCF is 1.

The GCF is 3.

The GCF is 3.

The GCF is 3.

The GCF is 3.

The GCF is 3.

The GCF is 3.

The GCF is 1.

The GCF is 1.

The GCF is 1.

The greatest common multiple is astronomical and irrelevant. The greatest common factor is 3. The least common multiple is 105.