Find the nature of states of the Markox chain with t.p.m. $\begin{array}{ccc}0& 1& 2\end{array}\phantom{\rule{0ex}{0ex}}\begin{array}{c}0\\ 1\\ 2\end{array}\left(\begin{array}{ccc}0& 1& 0\\ \frac{1}{2}& 0& \frac{1}{2}\\ 0& 1& 0\end{array}\right)$ RTU B.Tech Statistics and Probability Theory 2013