The GCF of all three numbers is 20 !
Nope - 14 is not a factor of 100 or 200. The GCF of all three numbers is 20 !
The GCF is 100.
100 is the GCF.
The GCF is 100.
It is 20
100 and 200 have a GCF of 100.
The GCF is 100.
The GCF is 20.
100
GCF = 20
100
Since 100 is a factor of 200, it is automatically the GCF.