What is the HCF of 48 and 76?

To find the HCF of these two numbers, you have to break them down into their prime factors:

48 = 2x2x2x2x3

76 = 2x2x19

The next step is to identify any common prime factors. In this case both numbers have two 2s as prime factors. Multiply these together and you get 4. Therefore 4 is the HCF of 48 and 76.