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Work out the highest common factor (HCF) of 18 and 30
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Work out the highest common factor (HCF) of 18 and 30

User Scragz
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18 = 2* 3 * 3\\\\30 = 2 * 3 * 5\\\\\text{HCF}~ = 2* 3 = 6

User Dek Dekku
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