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The GCF of 21 and 130 is 1.
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Find HCF of: 42 & 260 63 & 390 105 & 650 147 & 910 42 & 130 21 & 260 63 & 130 21 & 390 105 & 130 21 & 650 147 & 130 21 & 910
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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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