The GCF is 4.
The HCF is 4.
If you mean 12, 16 and 28 then the HCF is 4
The HCF of 16 & 33 is... 1
The GCF is 28.
The GCF is 16.
The HCF of 16 and 96 is 16
The GCF is 16.
4 and 336, respectively.
Since 16 is a factor of 48, it is automatically the GCF.
If you mean 28, 49 and 84 then the hcf is 7
HCF(308, 420) = 28.