Show that the following sets have the same cardinality as \(\mathbb{N}:\{m \in \mathbb{N}: m\) is odd \(\}, \mathbb{N} \times \mathbb{Z}\), \(\mathbb{Q}^{m}(m \in \mathbb{N}), \bigcup_{m \in \mathbb{N}} \mathbb{Q}^{m}\)