0
Wiki User
The GCF is 7.
GCF of 49 and 21 is 7.
The GCF of 21, 49, and 80 is 1.
The GCF of 21, 49, and 84 is 7.
The GCF is 1.
The GCF of 21, 49, and 56 is 7
The GCF of 21, 49 and 115 is 1.