The GCF is 1.
7 is not a factor of 72. The GCF is 8.
The GCF is 12.
The GCF is 1.
The GCF is 72.
The GCF is 8.
The GCF is 72.
35: 1, 5, 7, 3572: 1, 2, 3, 4, 6, 9, 12, 18, 24, 36, 72The only factor 35 and 72 have in common is 1.GCF = 1
The GCF is 8.
The GCF is 8.
The GCF is 9.
The GCF is 2.
The GCF is 1.