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The GCF of 420 and 855 is 15.
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Find HCF of: 840 & 1710 1260 & 2565 140 & 285 2100 & 4275 84 & 171 2940 & 5985 840 & 855 420 & 1710 1260 & 855 420 & 2565 2100 & 855 420 & 4275 2940 & 855 420 & 5985
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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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