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The GCF of 51 and 63 is 3.
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Find HCF of: 102 & 126 153 & 189 17 & 21 255 & 315 357 & 441 102 & 63 51 & 126 153 & 63 51 & 189 255 & 63 51 & 315 357 & 63 51 & 441
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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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