The GCF is 50.
No, because the GCF of 50 and 100 is 50
The GCF is 50.
The GCF of 25, 50, and 100 is 25.
The GCF is 10.
The GCF is 5.
GCF(30, 50) = 10.
The GCF is 5.
The GCF is 10.
The GCF of 50 and 30 is 10. (I believe you meant to ask "What ?" instead of "Why ?".)
The GCF of 30, 50, 20 is 10.
30 = 2 x 3 x 5 50 = 2 x 5 x 5 100 = 2 x 2 x 5 x 5 GCF = 2 x 5 = 10