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The GCF of 21 and 165 is 3.
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Find HCF of: 42 & 330 63 & 495 7 & 55 105 & 825 147 & 1155 42 & 165 21 & 330 63 & 165 21 & 495 105 & 165 21 & 825 147 & 165 21 & 1155
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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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