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SMO 2015 Junior Round 1 Question 30

SMO · SMO 2015 Junior Round 1

Question 30

Let $n$ be a positive integer. Assume that the sum of $n$ and 7 is a multiple of 8 but the difference of $n$ and 7 is a multiple of 14. Find the largest possible value of $n$ such that $n\lt 10000$.