The GCF is: 10
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the GCF for 20, 30and 80 is 10.
The factors of 20 are 1, 2, 4, 5, 10, and 20.The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30.The factors of 80 are 1, 2, 4, 5, 8, 10, 16, 20, 40, 80The gcf of 20, 30, and 80 is 10.
The GCF is 10.
The GCF is 80.
The GCF of 27 and 80 = 1