The GCF is 1.
The greatest common factor (GCF) of 63, 21, and 7 is 7.
14 and 21, and 21 and 28 are the number pairs between 15 and 30 that have 7 as their greatest common factor.
The GCF is 7.
The greatest common factor of the numbers 56 and 21 is 7.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The GCF is 1.
The greatest common factor (GCF) of 63, 21, and 7 is 7.
The GCF is 7.
14 and 21, and 21 and 28 are the number pairs between 15 and 30 that have 7 as their greatest common factor.
GCF(14, 28, 21) = 7
The GCF is 7.
The GCF is 7.
The GCF is 3.
The GCF is 1.