You need at least two numbers to find a GCF. If that's 15, 30 and 60, the GCF is 15.
The GCF is 6.
The GCF is 9.
The GCF is 4.
The GCF is 30.
50
The GCF of 125, 200 is 25.
The GCF is 3.
The GCF is 2.
The GCF is 5.
The GCF is: 1
The GCF is 1.
The GCF is 27.