Christmas MT's answer to Alice Ng's Secondary 1 Maths question.

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Christmas MT
Christmas Mt's answer
3427 answers (A Helpful Person)
You're supposed to have 2 cubed. Not 2 squared. This is because lowest common multiple searches for the highest possible index of the prime factors. Therefore, it is 2 cubed times 5. Not 2 squared times 5. And you have the answer 40.