Considere os conjuntos

!$ A = \left \{ x \in IR/ | x -3| + | x-2 | = 1 \right \};\,\,B= \left \{ \in IR/3+ 2x - x^2 > 0 \right \} !$

!$ A = \left \{ x \in IR/1 < { \large1 \over x} < 2 \right \} !$ e

!$ C = \left \{ x \in IR / 4 \le / x^2 \le 9 \right \} !$. Julgue a afirmativa:

Item 4 - !$ \left \{ ( { \large 1 \over n}, { \large n + 1 \over n + 2}) / n \in IN^* \right \} \subset B x C !$