Exercise 14.

Let \(A_2\) be the set of all multiples of 2 except for \(2\text{.}\) Let \(A_3\) be the set of all multiples of 3 except for 3. And so on, so that \(A_n\) is the set of all multiples of \(n\) except for \(n\text{,}\) for any \(n \ge 2\text{.}\) Describe (in words) the set \(\bar{A_2 \cup A_3 \cup A_4 \cup \cdots}\text{.}\)

Hint.
in-context