Since 50 is a factor of 100, it is automatically the GCF.
Five.
No, 100 is.
Since 50 is a factor of 100, all of its factors are common.
The greatest common factor of 100 and 150 is 50.
It can be. 50 is a common factor of 100 and 150.
100
Leaving aside the trivial answer, that 100 is a factor of itself, the [next] greatest is 50.
The GCF of 20, 50 and 100 is 10. The GCF of 2050 and 100 is 50.
GCF(100, 200, 350) = 50.
50 is a factor of all the multiples of 50: 50, 100, 150, 200, etc.
50