You need at least two numbers to find a GCF.
The GCF of 1225 and 85 is 5. The GCF of 12, 25 and 85 is 1.
The GCF is 5.
The GCF of 60 and 85 is 5.
The GCF is 1.
The GCF is 17.
The GCF is 5.
The GCF of 1225 and 85 is 5. The GCF of 12, 25 and 85 is 1.
The GCF is 5.
The GCF is 5.
The GCF is 1.
The GCF is 5.
The GCF is 5.
The GCF is 1.
The GCF is 17.
The GCF is 1.
The GCF is 1.
The GCF of 35, 85 is 5.