What is the greatest common factor of 12 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 12 and 24, we can list out the factors of each number:

• The factors of 12 are 1, 2, 3, 4, 6, and 12.
• The factors of 24 are 1, 2, 3, 4, 6, 8, 12, and 24.

From the lists above, we can see that the greatest common factor of 12 and 24 is 12. This means that 12 is the largest number that divides both 12 and 24 without leaving a remainder.