You need at least two numbers to find a GCF.
The HCF of 12 and 60 is 12
The GCF is 12.
The GCF is 2.
The HCF of 40 & 12 is... 4
The hcf of 12 & 36 is 12
the HCF is 6
9= 3x3 12= 2x2x2x2x3 HCF = 3
The GCF is 12.
The GCF is 12.
The GCF is 3.
The hcf is 12
lcm(9, 12) = 36; hcf(9, 12) = 3.