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The GCF of 5 and 81 is 1.
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Find HCF of: 10 & 162 15 & 243 25 & 405 35 & 567 10 & 81 5 & 162 15 & 81 5 & 243 25 & 81 5 & 405 35 & 81 5 & 567
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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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