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The GCF of 21 and 255 is 3.
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Find HCF of: 42 & 510 63 & 765 7 & 85 105 & 1275 147 & 1785 42 & 255 21 & 510 63 & 255 21 & 765 105 & 255 21 & 1275 147 & 255 21 & 1785
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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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