To find this, you first have to split the numbers into their prime factors:
18 = 2x3x3
54 = 2x3x3x3
The next step is to identify any common prime factors. In this case both numbers have a 2 and two 3s as prime factors. Multiply these together gives you:
2x3x3 = 18
Therefore the HCF of 18 and 54 is 18.
It is: 18
3 and 18 6 and 9
The GCF/HCF of 54 and 504 is 18.
The GCF is 18.
The HCF is 18
HCF is the highest common factor of two or more numbers. HCF of 12 and 54 is 6.
27
6
It is: 2
6
It is: 18
HCF(54, 16) = 2