\documentclass[a4paper,10pt, landscape, twocolumn]{article}
\usepackage{myXsim}

\title{Bilan - marché noir}
\tribe{Terminale ES}
\date{Septembre 2019}

\pagestyle{empty}

\newcommand\exemple{%
\paragraph{Exemple - Marché noir}

$X$ la variable aléatoire décrivant les gains du professeur après avoir confisquer puis revendu un téléphone.

$X$ a pour loi

\begin{center}
    \begin{tabular}[h]{|p{2cm}| *{6}{c|}}
        \hline
        Valeur & 10 & 40 & 150 & 200 & 250 \\ \hline
        Probabilité& 0.10 	 & 0.05 	   & 0.50 		  & 0.05 					& 0.30\\ 
        \hline
    \end{tabular}

    \begin{tikzpicture}[scale=0.8]
        \draw[very thin, gray] (0,0) grid (10,4);

        \draw[line width=2mm,color=red] plot[ycomb] coordinates {(0.4, 0.4) (1.6, 0.2) (6, 2) (8, 0.2) (10, 1.2)};

        \draw[->, very thick] (-0.5,0) -- (10.5,0);
        \draw[->, very thick] (0,-0.5) -- (0,4.2);

        \draw (0, 4.1) node [above] {Probabilité};
        \draw (0, 4) node [left] {1};
        \draw (0, 2) node [left] {0.5};
        \draw (10, 0) node [above right] {Valeur};
        \draw (10, 0) node [below] {250};
        \draw (1, 0) node [below] {25};


        % \draw[very thick, color=red, |-|] (0.4, 0) -- (0.4, 0.4);
        % \draw[very thick, color=red, |-|] (1.6, 0) -- (1.6, 0.2);
        % \draw[very thick, color=red, |-|] (6, 0) -- (6, 2);
        % \draw[very thick, color=red, |-|] (8, 0) -- (8, 0.2);
        % \draw[very thick, color=red, |-|] (10, 0) -- (10, 1.2);
    \end{tikzpicture}
\end{center}

Espérance:

\vfill

\paragraph{Exemple - lancé de dé - équipartition}

$X$ la variable aléatoire décrivant le score obtenu à un lancé de dé.

$X$ a pour loi

\begin{center}
    \begin{tabular}[h]{|p{2cm}| *{7}{c|}}
        \hline
        Valeur & 1 & 2 & 3 & 4 & 5 & 6 \\ \hline
        Probabilité& $\frac{1}{6}$ 	 & $\frac{1}{6}$ 	   & $\frac{1}{6}$ 		  & $\frac{1}{6}$ & $\frac{1}{6}$	& $\frac{1}{6}$	\\ 
        \hline
    \end{tabular}

    \begin{tikzpicture}[scale=0.8]
        \draw[very thin, gray] (0,0) grid (7,4);

        \draw[line width=2mm,color=red] plot[ycomb] coordinates {(1, 1.666)(2, 1.666)(3, 1.666)(4, 1.666)(5, 1.666)(6, 1.666)};

        \draw[->, very thick] (-0.5,0) -- (7.5,0);
        \draw[->, very thick] (0,-0.5) -- (0,4.2);

        \draw (0, 4.1) node [above] {Probabilité};
        \draw (0, 4) node [left] {1};
        \draw (0, 2) node [left] {0.5};
        \draw (7, 0) node [above right] {Valeur};
        \draw (1, 0) node [below] {1};
        \draw (6, 0) node [below] {6};

    \end{tikzpicture}
\end{center}
Espérance:
\vfill
}

\begin{document}

\exemple
\pagebreak
\exemple

\end{document}