What is the greatest common factor of 27 and 36?

The greatest common factor (GCF) of 27 and 36 is 9.

To find the GCF, you can list all the factors of each number and then identify the largest factor that is common to both numbers.

For 27, the factors are 1, 3, 9, and 27. For 36, the factors are 1, 2, 3, 4, 6, 9, 12, 18, and 36.

The largest factor that is common to both numbers is 9, making it the greatest common factor of 27 and 36.