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The GCF of 810 and 420 is 30.
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Find HCF of: 1620 & 840 405 & 210 2430 & 1260 270 & 140 4050 & 2100 162 & 84 5670 & 2940 1620 & 420 810 & 840 2430 & 420 810 & 1260 4050 & 420 810 & 2100 5670 & 420 810 & 2940
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The greatest common factor (GCF) is also known as greatest common divisor (GCD) or highest common factor (HCF).
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