Eric Nicholas K's answer to Belle's Secondary 1 Maths Singapore question.
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HCF: Just take the lowest powers of each prime factor (if one number has no factor 5, then 5 cannot be part of the HCF), then multiply all.
LCM: Just take the highest powers of each prime factor, then multiply all.
LCM: Just take the highest powers of each prime factor, then multiply all.
Date Posted:
5 years ago
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