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The GCF of 39 and 81 is 3.
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Find HCF of: 78 & 162 117 & 243 13 & 27 195 & 405 273 & 567 78 & 81 39 & 162 117 & 81 39 & 243 195 & 81 39 & 405 273 & 81 39 & 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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