20 is not a factor of 30
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The greatest common factor (GCF) of 20 and 30 is 10.
The greatest common factor of 8, 20, and 30 is 2
The Greatest Common Factor (GCF) is: 5
The greatest common factor (or highest common factor) is the highest number that divides exactly into two or more numbers. 20: 1, 2, 4, 5, 10, 20 30: 1, 2, 3, 5, 6, 10, 15, 30 The highest common factor of 20 and 30 is 10.
10, 15 , 20, 25, 30...