John Oon's answer to Xin Ning's Secondary 1 Maths Singapore question.

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John Oon
John Oon's answer
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John Oon
John Oon
2 years ago
LCM consists of the digit with the highest power from each number. 5 from 5, 7 from 14 and 2^2 from y. So y must have 2^2.