The GCF is 3 because for factor for 78 is 1,2,3,6,13,26,39,78 and factor for 27 is 1,3,9,27 and they both have 3 in common so the answer will be 3
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The greatest common factor of 78 and 546 is 78.
The greatest common factor of 78 and 120 is 6.
The greatest common factor of 78 , 41 = 1
The greatest common factor of 12 and 78 is 6.
The Greatest Common Factor (GCF) is: 2