# 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?

×