The GCF is 18.
The greatest common factor of 15 and 18 is three.
The GCF is 18.
The GCF is 18.
It is: 9
The GCF is 2.
The GCF is 6.
The GCF is 18.
Since 18 is a factor of 72, it is automatically the GCF.
Greatest common factor of 12 18 and 42 is 6.
The highest common factor of 10 and 18 is 2.
The greatest common factor of 10, 18, and 40 is 2.