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Anonymous
It is not possible to give a sensible answer to this question. The greatest common factor (GCF) refers to a factor that is COMMON to two or more numbers. You have only one number in the question!
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The Greatest Common Factor of 18 and 36 is 18.
The GCF is 2.
The GCF is 18.
90 = 18 x 5 36 = 18 x 2 Since 90 and 36 are both divisible by 18, the GCF is 18.
It is 18