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Anonymous
The Greatest Common Factor is 6
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The GCF is 30.
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
210 and 420 have a GCF of 210.
The GCF is 42.
The GCF of 8 and 210 is 2.
The GCF is 6.