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The GCF of 21 and 3521 is 7.
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Find HCF of: 42 & 7042 3 & 503 42 & 3521 21 & 7042 63 & 3521 105 & 3521 147 & 3521
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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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