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The GCF of 21 and 3920 is 7.
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Find HCF of: 42 & 7840 3 & 560 42 & 3920 21 & 7840 63 & 3920 105 & 3920 147 & 3920
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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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