12 and 30
26, 52, 78
Since 6 is a factor of 42, it is automatically the GCF.
The common factors are 1, 2, 3, 6 The greatest common factor is six.
The greatest common factor of 42 and 12 is 6.
3 and 36
The greatest common factor is six.
3
It is: 2
The greatest common factor of 6, 7, and 8 is ' 1'.
The greatest common factor is six.
[6] and [12] fit the requirement. 6 is the GCF of the pair.■
Since 12 is a factor or 36, it is automatically the GCF.