What is the gcf of 36 and 24?

The greatest common factor (GCF) of 36 and 24 is 12. This is because 12 is the largest number that divides both 36 and 24 without leaving a remainder. The prime factors of 36 are 2^2 * 3^2 and the prime factors of 24 are 2^3 * 3. When finding the GCF, you take the common factors of both numbers and multiply them together, which in this case is 2^2 * 3 = 12.