The greatest common factor of 21 and 77 is 7.
7 is the highest common factor of 21, 77 and 91.
The GCF of 21 63 and 77 is 7.
HCF(21, 77, 84) = 7.
7 is the highest common factor of 21, 77 and 91.
It is: 7
It is: 7
The GCF is 1.
The GCF is 7.
The GCF is 7.
The GCF is 7.
The GCF is 7.