18: 1,2,3,6,9, and 18
30: 1,2,3,5,6,10,15,30
The Greatest common factor for these two numbers is 6
The GCF is 6.
The GCF is 3.
The GCF is 6.
6 is the GCF of 30 and 18.
The GCF for 20 30 18 is 2
The GCF is 3.
The GCF is 6.
The GCF is 6.
The greatest common factor of 18, 30, and 42 is 2.
The GCF is 3.
The GCF is 3.
The GCF is 6.