What is the greatest common factor of 18 and 24?

The greatest common factor (GCF) of two numbers is the largest number that divides both numbers without leaving a remainder.

To find the GCF of 18 and 24, we can list out the factors of both numbers:

Factors of 18: 1, 2, 3, 6, 9, 18 Factors of 24: 1, 2, 3, 4, 6, 8, 12, 24

The common factors of 18 and 24 are: 1, 2, 3, 6.

Therefore, the greatest common factor of 18 and 24 is 6.