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Find the factors or numbers that go in to 3 and 20

20:1,2,4,5,10,20

3:1,3

Then see what number they both go in to. GCF: 1
The GCF is 1.
The GCF is 1.

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6y ago
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7y ago

The GCF is 1.

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9y ago

GCF(3, 20) = 1.

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7y ago

GCF(3, 16, 20) = 1.

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Q: What is the greatest common factor for 3 16 and 20?
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