the only whole number gcf is "1".
The GCF is 1.
The GCF of 9 and 20 is 1
The GCF is 1
The GCF is 4.
The GCF is 1.
The GCF is 1.
The GCF is 20.
The GCF is 9.
gcf of 80 and 100 is 20.The GCF is 20.
The greatest common factor of 20 and 90 is 10.10 x 2 = 2010 x 9 = 90
The GCF is 9.
The GCF is 9.