Oh honey, the Greatest Common Factor (GCF) of 28, 16, and 42 is 2. It's like finding the one decent person in a sea of weirdos - just pick out the biggest number that divides evenly into all three of those numbers. Keep it simple, darling.
GCF of 21 and 42: 21GCF of 16 and 25: 1
The GCF is 14.
The GCF is 14.
The GCF is 14.
7 is the gcf of 28 35 and 42
The GCF is 7.
GCF(14, 28, 42) = 14.
The GCF of 28 and 42 is 14.
The Greatest Common Factor (GCF) of 42 and 28 is 14.
The GCF is 14.
GCF of 21 and 42: 21GCF of 16 and 25: 1
The GCF of 28, 42, and 70 is 14.The GCF is 14.
The GCF is 14.
The GCF is 14.
The GCF is 1.
The GCF is 14.
The GCF is 7.