You need at least two numbers to find a GCF.
If that's 284 and 249, the GCF is 1.
If that's 28, 42 and 49, the GCF is 7.
To have a HCF, you need at least 2 numbers. There is no HCF in just 1 number.
the HCF is 6
The HCF is 5.
The HCF is 1
HCF = 14
The HCF of 16 & 33 is... 1
The HCF is 1.
The HCF is 7.
The hcf is 12
The HCF is 18
The HCF is 1.
The HCF is 14.