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The GCF of 21 and 489 is 3.
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Find HCF of: 42 & 978 63 & 1467 7 & 163 105 & 2445 147 & 3423 42 & 489 21 & 978 63 & 489 21 & 1467 105 & 489 21 & 2445 147 & 489 21 & 3423
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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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