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The GCF of 21 and 85 is 1.
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Find HCF of: 42 & 170 63 & 255 105 & 425 147 & 595 42 & 85 21 & 170 63 & 85 21 & 255 105 & 85 21 & 425 147 & 85 21 & 595
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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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