5 (leaves you with 2, 4 and 7)
The GCF is 1.
The GCF is 5.
5
HCF is the highest common factor of two or more numbers. HCF of 20 and 30 is 10.
LCM is 20 and the hcf is 10
The GCF is 1.
10
It is: 10
It is 10
The GCF is 7.
2 and 20 have an HCF of 2 and an LCM of 20. You could also use 4 and 10.
The greatest common factor (usually abbreviated GCF) of 15, 35, and 20, is 5.