GCF is the abbreviation of Greatest Common Factor and it is the largest number that is the divisor of a set of numbers. The GCF can be found through the following process:

First of all find the factors of both the numbers:

24= 2 x 2 x 2 x 3

40= 2 x 2 x 2 x 5

The common factors are 2x2x2

Thus the GCF would be 8

First of all find the factors of both the numbers:

24= 2 x 2 x 2 x 3

40= 2 x 2 x 2 x 5

The common factors are 2x2x2

Thus the GCF would be 8