The factors of 18 are 1, 2, 3, 6, 9 and 18. For any of them to be common, they need to be compared to another set of factors.
Since 18 is a factor of 54, put the factors of 18 (except for 18) in the left circle, the factors of 54 (except for 18) in the right circle, and put 18 in the center where they intersect.
It can be. 18 is a common factor of 36 and 54.
Since 18 is a factor of 90 and it is the largest factor of itself, the greatest common factor of 18 and 90 is 18.Since 18 is a factor of 90, it is automatically the GCF.
The greatest common factor is 18.
The greatest common factor is 18.
The greatest common factor of 18 and 55 is 1.
The greatest common factor of 39 and 18 is definitely 3.
It is 1 but the highest common factor is 18
The greatest common factor of 18 and 56 is 2.
The greatest common factor of 18 and 21 is 3.
2 is the greatest common factor of 18 and 562
The highest common factor of 10 and 18 is 2.