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The GCF of 420 and 810 is 30.
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Find HCF of: 840 & 1620 210 & 405 1260 & 2430 140 & 270 2100 & 4050 84 & 162 2940 & 5670 840 & 810 420 & 1620 1260 & 810 420 & 2430 2100 & 810 420 & 4050 2940 & 810 420 & 5670
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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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