the answer is 8
18 and 42's highest common factor is six.
The Greatest Common Factor of 42 and 18 is 6.
The greatest common factor of 18 21 and 42 is 3.
The greatest common factor of 42 , 18 = 6
6
The greatest common factor (GCF) is: 6
The GCF of 18, 42 and 60 is 6.
The GCF is 6.
It is: 3
6
It is: 6
The GCF is 6.