The greatest common factor of 42 and 66 is 6.
The greatest common factor of 42 and 66 is 6.6
The GCF is 6.
The GCF is 6.
The GCF is 6.
The GCf is 6.
The GCF is 6.
The GCF is 42.
If you mean the greatest common divisor (or factor), the answer is 6
The GCF is 6.
42 and 66 have the greatest common divisor of 6, so you can divide both factors by 6 to get 7/11.
If that's 66, 42, 60 and 48, the GCF is 6.
The greatest common factor of 66 , 132 = 66