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The greatest common factor of 10, 15, and 20 is 5.

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 both numbers have in common.

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 10 are 1, 2, 5, and 10.

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

The factors of 20 are 1, 2, 4, 5, 10, and 20.

The common factors are 1 and 5. Therefore, the greatest common factor is 5.
If you mean: 10, 15 and 20 then it is 5 that is the greatest common factor

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Wiki User

7y ago

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More answers

It is 10-1,2,5,10

15-1,3,5,15

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1 and 5, the GCF.

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Wiki User

10y ago
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The GCF is 5.

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Wiki User

9y ago
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GCF(15, 10, 20) = 5.

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Wiki User

10y ago
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5

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cutie pie

Lvl 2
4y ago
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5

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Anonymous

4y ago
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Q: What is the greatest common factor of 10 15 and 20?
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