What the HCF of 25 and 40?

Answer 1

To work this out, you have to split the numbers into the product of their prime factors:

25 = 5x5

40 = 2x2x2x5

The next step is to identify any common factors. In this case, both numbers have a 5 as a prime factor. Thus the HCF of 25 and 40 is 5.