Wiki User
∙ 2012-02-21 23:19:57Factor them.
2 x 3 x 3 = 18
3 x 3 x 3 x 3 x 5 = 405
Select the common factors.
3 x 3 = 9, the GCF
Wiki User
∙ 2012-02-21 23:19:57GCF of 18 and 405 is 93
The greatest common factor is 18.
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 of 39 and 18 is definitely 3.
The greatest common factor of 18 and 56 is 2.
2 is the greatest common factor of 18 and 562
The Greatest Common Factor of 6, 18 is 6.
The greatest common factor of 18 and 150 is 6.
The greatest common factor of 18 and 118 is 2.
The greatest common factor of 18 and 47 is 1.
The greatest common factor of 18 , 20 = 2
The greatest common factor of 18 and 55 is 1.