because u need the 5 to get to the twenty like when you count by your fives, it has 20 in it
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The greatest common factor of 12 and 20 is 4
The GCF of 4, 12, and 20 is 4The GCF is: 4
The Greatest Common Factor (GCF) of 20, 24, and 60 is 4
The greatest common factor of 20, 28, and 24 is 4.
4