The GCF is 1.
The LCM of 7 and 15 is 105. The GCF of 7 and 15 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.
GCF(14, 28, 21) = 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 GCF is 1.
The GCF is 7.
The GCF is 3.