The GCF is 75.
The GCF is 3.
hcf(300, 525) = 75 lcm(300, 525) = 2100 Using prime factorization: 300 = 2² x 3 x 5² 525 = 3 x 5² x 7 hcf = 3 x 5² = 75 lcm = 2² x 3 x 5² x 7 = 2100
The GCF is 15.
"Common" means "same for both". There's nothing 'common' about one single thing, and there are no 'common' factors until there are at least two different numbers..
15
15
It is: 75
5
The GCF is: 300
25
It is: 12