The GCF is 6.
Oh, dude, the Greatest Common Factor (GCF) of 120 and 3000 is 120. Like, you just find the largest number that divides evenly into both of them, and boom, that's your GCF. So yeah, 120 is the winner here, no need to stress about it.
The GCF is 6.
The GCF is 26.
The GCF is 3.
The GCF is 2.
The GCF is 26.
The GCF of 78 and 30 is 6.
The GCF is 3.
The GCF is 2.
The GCF is 2.
The GCF is 1.