The GCF is: 1
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The GCF of 3 and 30 is 3.3.
The result of dividing 27 and 30 is a fraction. The concept of GCF is not relevant for fractions.
The GCF is 3.
The greatest common divisor of 27 and 30 is 3.
The systematic way to get the answer is: 90 = 2*3*3*5 210 = 2*3*5*7 So gcf is 2*3*5 = 30