\[\boxed{\mathbf{199.}}\]
\[M = \left\{ 1;2;3;4 \right\}.\]
\[\textbf{а)}\ да;\]
\[\textbf{б)}\ нет;\]
\[\textbf{в)}\ да;\]
\[\textbf{г)}\ нет;\]
\[\textbf{д)}\ да;\]
\[\textbf{е)}\ да.\]