28 is a factor of 56, and 28 is also a factor of itself.
So the highest common factor of 28 and 56 is 28.
The GCF is 28.
It is: 28
The HCF of 28, 42 & 56... is 14 !
HCF(308, 420) = 28.
I assume you mean 14, 56 and 84. The HCF of these is 14. The HCF of 1456 and 84 is 28
The GCF is 14.
The GCF is 7
The GCF is 4.
The HCF is: 2
The GCF is 2.
HCF(56, 98, 168) = 14
42=2x3x7 56=23x7 so the HCF = 2x7 = 14