The GCF is 7.
7 is the GCF of 42, 49 and 84.
The GCF is 7.
The GCF is 7.
It is 7The GCF is 7.
The GCF is 7.
The GCF is 42.
The common factors are: 1, 2.
The GCF of 42 and 84 is 42.
The GCF is 1.
The GCF is 6.
The GCF is 6.
The GCF is 21.
The GCF is 6.