The GCF is 4.
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The greatest common factor (GCF) of 20, 48, and 64 is 4.
The greatest common factor (GCF) of two numbers is the largest positive integer that divides both numbers without leaving a remainder. The GCF of 20 and 64 is 4, as both numbers can be evenly divided by 4. When you add 20 and 64 together, you get 84.
GCF of 63 and 108 is 9.
GCF(108, 300) = 12.
The GCF is 9.