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The GCF of 21 and 256 is 1.
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Find HCF of: 42 & 512 63 & 768 105 & 1280 147 & 1792 42 & 256 21 & 512 63 & 256 21 & 768 105 & 256 21 & 1280 147 & 256 21 & 1792
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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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