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Answer: 10

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 20 are 1, 2, 4, 5, 10, and 20.

The factors of 70 are 1, 2, 5, 7, 10, 14, 35, and 70.

The common factors are 1, 2, 5, and 10. Therefore, the greatest common factor is 10.

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7y ago
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13y ago

Greatest common factor of 70 and 20 is 10.

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9y ago

The GCF is 10.

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7y ago

The answer is 10.

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Q: What is the greatest common factor of 20 and 70?
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Same as the greatest common factor of 50 and 20 - where 20 is the remainder of the division of 70 by 50.


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