Best Answer

Factor them.

2 x 3 x 3 = 18

2 x 2 x 3 x 3 = 36

2 x 2 x 2 x 2 x 3 = 48

Select the common factors.

2 x 3 = 6, the GCF

More answers

The GCF is 3.

Q: What is the greatest common factor of 48 39 and 18?

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The greatest common factor of 39 and 18 is definitely 3.

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