The GCF is 10.
It is 10
The GCF of 30, 40, 50, and 80 is 10
The GCF is 10.
10 is the GCF of 40 and 50.
The GCF is 5.
The GCF of 20 40 and 50 is 10.
GCF(30, 50) = 10.
The GCF is 5.
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.
The GCF is 10.