Верно ли, что:

\(\displaystyle -9 \in \bf N\) [?|верно|неверно]\(\displaystyle {\small;}\\ \)

\(\displaystyle -9 \in \bf Z\) [?|верно|неверно]\(\displaystyle {\small;}\\ \)

\(\displaystyle -9 \in \bf Q\) [?|верно|неверно]\(\displaystyle {\small.}\)