Best Answer

The factors of 55 are: 1, 5, 11, 55

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

The common factors are: 1, 5

- The Greatest Common Factor (GCF) is: 5

Q: What is the gcf of 55 and 70?

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The GCF is 5.

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