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What is the greatest common factor of 20 12 and 10?

Updated: 8/21/2019
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7y ago

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The GCF of 10, 12, and 20 is 2.

One way to get the answer is to remember that the GCF can't be any greater than the smallest difference between numbers in the set. In this case, that difference is 2 (12-10). Since 2 is a factor of all of the numbers, it is the GCF.

You can also write out the prime factorizations of the numbers in the set:
10=2*5
12=2*2*3
20=2*2*5
So the GCF is 2.

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7y ago
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The GCF is 2.

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It is: 2

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