The GCF is 3.
The greatest common factor (GCF) for twenty-one and seventy-two is three.
The Greatest Common Factor of 72, 98: 2
seventy
It is 504.
The GCF is 1.
It is: 15
The GCF is 18.
No, it's six. 12 is not a factor of thirty.
You need at least two numbers to find a GCF.
The HCF is: 12
15, 30 and 45, among others.
The GCF is 3.