1. They are coprime.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF of 49 and 49 is 49.
These numbers are co-prime so there is no common factor above 1.
The GCF is 1.
The GCF is 7.
The GCF is 7.
The GCF is 1.
The GCF is 49.
The GCF is 1.
The GCF is 1.