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Let n be a natural number such that 1/2+...

Let `n` be a natural number such that `1/2+1/3+1/7+1/n` is also a natural number. Which of the following statements is not true? (a) 2 divides `n` (b) 3 divides `n` (c) 7 divides `n\ ` (d) `n gt 84`

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