The greatest common factor (GCF) of 27 and 36 is 9.
To find the GCF, we first determine the factors of each number.
- The factors of 27 are: 1, 3, 9, 27.
- The factors of 36 are: 1, 2, 3, 4, 6, 9, 12, 18, 36.
Next, we identify the common factors from both sets:
- Common factors: 1, 3, 9.
Out of these common factors, the largest one is 9. Therefore, the greatest common factor of 27 and 36 is 9.