That sounds tricky!

Level pending

Let \(N_1\) be a subset of \(N\).The only difference between \(N\) and \(N_1\) is that every element of \(N_1\) is not divisible by either \(2\) or \(3\).If Lawrence decides to write down the numbers of \(N_1\) in increasing order what would be the number in the \(1999\)-th position?

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