Answer:
The greatest common factor (GCF) of 18 and 20 is 2.
Step-by-step explanation:
To solve this problem, first, you have to find the greatest common factor of 18 and 20.
Factors of 18:
1, 2, 3, 6, 9, and 18.
Factors of 20:
1, 2, 4, 5, 10, and 20.
So, the greatest common factor (GCF) of 18 and 20 is 2.
