Sendo !$ A \cup B = \left \{ 0,1,2,3,6,7,9 \right \} !$ !$ A \cap B = \left \{ 0,1,2,3 \right \} !$ e !$ A - B = \left \{ 7 \right \} !$ , julgue o item.
!$ \varnothing\,\,\in\,A !$.
Sendo !$ A \cup B = \left \{ 0,1,2,3,6,7,9 \right \} !$ !$ A \cap B = \left \{ 0,1,2,3 \right \} !$ e !$ A - B = \left \{ 7 \right \} !$ , julgue o item.
!$ \varnothing\,\,\in\,A !$.
