The GCF is 13.
49 = 7 x 7, 21 = 7 x 3, 91 = 7 x 13. HCF is 7
HCF = 56 LCM = 8008 616 = 2^3 x 7 x 11 728 = 2^3 x 7 x 13 hcf = 2^3 x 7 = 56 lcm = 2^3 x 7 x 11 x 13 = 8008
6
The GCF is 13.
The first two are prime so their hcf, and that of all three numbers, is 1.
The GCF is 7.
The HCF is 7.
The GCF is 7.
156: Hcf of 13 and 39= 13 13*12=156 =156
The GCF is 7.
The GCF is 13.