\documentclass[pstricks,border=6pt]{standalone}
\usepackage{pst-eucl}
\usepackage[utf8]{inputenc} 
\usepackage[T1]{fontenc}
\usepackage[frenchb]{babel}
\usepackage{amsmath,amssymb}
\usepackage[bitstream-charter]{mathdesign}
\author{F. Lancereau}
\begin{document}
\begin{pspicture}(0,0)(17,10)
%\psgrid
\psset{nodesep=4pt}
\rput[c](8,9){\rnode{A}{\psframebox{Les $p$ éléments sont distincts 2 à 2}}}
\rput[c](6,7){\rnode{B}{\psframebox{l'ordre est important}}}
\rput[c](13.5,7){\rnode{C}{\psframebox{p-listes}}}
\ncline{-}{A}{B} % \ncline{->}
\ncput*{oui}
\ncline{-}{A}{C}
\ncput*{non}
\rput[c](3,5){\rnode{D}{\psframebox{$n=p$ ?}}}
\rput[c](9,5){\rnode{E}{\psframebox{combinaisons}}}
\ncline{-}{B}{D}
\ncput*{oui}
\ncline{-}{B}{E}
\ncput*{non}
\rput[c](13.5,5){\rnode{F}{\psframebox{$n^p$}}}
\ncline{-}{C}{F}
\rput[c](2,3){\rnode{G}{\psframebox{permutations}}}
\rput[c](5,3){\rnode{H}{\psframebox{arrangements}}}
\rput[c](9,3){\rnode{I}{\psframebox{$C^p_n$}}}
\rput[c](13.5,3){\rnode{J}{{{\begin{minipage}{0.4\linewidth}
\begin{itemize}
\item un tirage avec remise
\item un lancer successif d'un dé, d'une pièce
\end{itemize} 
\end{minipage}}}}}
\ncline{-}{D}{G}
\ncput*{oui}
\ncline{-}{D}{H}
\ncput*{non}
\ncline{-}{E}{I}
\ncline{-}{F}{J}
\rput[c](2,1){\rnode{K}{\psframebox{$n!$}}}
\rput[c](5,1){\rnode{L}{\psframebox{$A^p_n$}}}
\rput[c](9,1){\rnode{M}{{\begin{minipage}{0.5\linewidth}
\begin{itemize}
\item un tirage simultané
\item une main d'un jeu de cartes
\end{itemize} 
\end{minipage}}}}
\ncline{-}{G}{K}
\ncline{-}{H}{L}
\ncline{-}{I}{M}
\end{pspicture}
\end{document}