Oh, dude, the Highest Common Factor (HCF) of 4, 6, and 8 is like the biggest number that can divide all of them without leaving any remainder. So, you look at the factors of each number and find the largest one they all have in common. In this case, it's 2. So, the HCF of 4, 6, and 8 is 2. Cool, right?
factors of 8: 1, 2, 4, 8 factors of 18: 1, 2, 3, 6, 9, 18 HCF: 2
HCF(8, 6) = 2.
6
The GCF is 2.
4
It is: 4
8 is the HCF of 16 and 40.
It is: 4
4
the hcf of 12 and 20 = 4
4
It is 2