\documentclass{article}
\usepackage{amsmath}
%\usepackage{xepersian}
%\settextfont{XB Niloofar}
\begin{document}

\begin{table}
\begin{tabular}{|l|l|}\hline
$
\left\{
\begin{array}{ll}
1 &  t\\
0 &  s
\end{array} \right.
$
 &$2$\\
$1$&$2$\\
\hline
\end{tabular} 
\end{table} 

\end{document}