The GCF is (obviously) 15 !
GCF of 15 30 60 is 15.
The GCF is 15.
The Greatest Common Factor of 60, 45, and 30 is 15.
The GCF is 15.
The GCF is 15.
The GCF is 15.
The GCF is 15.
The GCF is 15.
The GCF is 15.
15
the answer is 15
You need at least two numbers to find a GCF. If that's 15, 30 and 60, the GCF is 15.
Since 15 is a factor of 60, it is automatically the GCF.