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The GCF of 60, 70, and 80 is 10.

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 60 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60.

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

The factors of 80 are 1, 2, 4, 5, 8, 10, 16, 20, 40, and 80.

The common factors are 1, 2, 5, and 10. Therefore, the greatest common factor is 10.

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Q: What is the greatest common factor of 60 70 and 80?
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