The GCF is 7.
7
7 is the highest common factor of 21, 77 and 91.
The HCF of 28 77 and 91 is 7, since 7 goes into all the numbers and all the numbers above it dont.
It is: 7
The GCF is 7.
49 = 7 x 7, 21 = 7 x 3, 91 = 7 x 13. HCF is 7
The GCF is 7.
The GCF is 7.
The GCF is 7.
Because 7 is the largest positive integer that divides evenly into all of those numbers with no remainder.
The GCF is 7.