The GCF is 4.
The GCF is 12.
The GCF is 12.
The GCF is 12.
The GCF is 6.
The GCF is 2.
The GCF is 28.
If that's 28, 56 and 84, the GCF is 28. If that's 2856 and 84, the GCF is 84.
The GCF is: 12.
The GCF is 12.
The GCF of 28, 84, and 91 is 7.
The GCF of 96 and 48 is 48. The GCF of 84 and 12 is 12.
The GCF is 1.