Answer:
GCF = 2
Explanation:
The greatest common factor (GCF) of a set of numbers is the largest number that is a factor of all the numbers in the set.
In order to find the GCF of 8, 12, and 18, we can list out the factors of each number:
8: 1, 2, 4, 8
12: 1, 2, 3, 4, 6, 12
18: 1, 2, 3, 6, 9, 18
The only factor that is common to all three numbers is 1 and 2.
Multiply it: we get
GCF = 1 × 2 = 2
Therefore, the GCF of 8, 12, and 18 is 2.