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.
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The Greatest Common Factor is 18
Greatest common factor of 18 36 and 90 is 18.
The greatest common factor of 54 and 90 is 18.
18
18