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The GCF of 21 and 68 is 1.
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Find HCF of: 42 & 136 63 & 204 105 & 340 147 & 476 42 & 68 21 & 136 63 & 68 21 & 204 105 & 68 21 & 340 147 & 68 21 & 476
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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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