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Answer: 5

Definition: 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 5 are 1 and 5.

The factors of 10 are 1, 2, 5, and 10.

The factors of 15 are 1, 3, 5, and 15.

The common factors are 1 and 5. Therefore, the greatest common factor is 5.

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16y ago

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