The greatest common factor (GCF) of 10, 12, and 18 is 2.
To determine the GCF, we need to find the factors of each number:
- Factors of 10: 1, 2, 5, 10
- Factors of 12: 1, 2, 3, 4, 6, 12
- Factors of 18: 1, 2, 3, 6, 9, 18
Next, we look for the common factors among these numbers. The numbers that appear in all three lists are:
- 1
- 2
Out of these common factors, the greatest one is 2. Therefore, the GCF of 10, 12, and 18 is 2.