diff --git a/1ST/Questions_flashs/P5/QF_S20-1.pdf b/1ST/Questions_flashs/P5/QF_S20-1.pdf
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diff --git a/1ST/Questions_flashs/P5/QF_S20-1.tex b/1ST/Questions_flashs/P5/QF_S20-1.tex
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+\documentclass[12pt]{classPres}
+\usepackage{tkz-fct}
+\usepackage{pgfplots}
+\usetikzlibrary{decorations.markings}
+\pgfplotsset{compat=1.18}
+
+\author{}
+\title{}
+\date{}
+
+\begin{document}
+\begin{frame}{Questions flashs}
+    \begin{center}
+        \vfill
+        Première ST
+        \vfill
+        30 secondes par calcul
+        \vfill
+        \textbf{Calculatrice non autorisée}
+        \vfill
+        \tiny \jobname
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 1}
+    % Suite
+    Un prix augmente de 5\euro tous les ans. En 2010, il était de 10\euro.
+
+    On appelle $u_n$ la suite qui modélise ce prix.
+
+    Quelle est la nature de la suite $(u_n)$, préciser ses paramètres.
+\end{frame}
+
+\begin{frame}{Calcul 2}
+    % Opération ensembles
+    \begin{tabular}{|*{4}{c|}}
+        \hline
+        Section/regime & Interne & Externe & Total \\
+        \hline
+        1ST & 10 & 15 & 25 \\
+        \hline
+        1G & 14 & 17 & 31 \\
+        \hline
+        Total & 24 & 32 & 56 \\
+        \hline
+    \end{tabular}
+    \vfill
+    On note :
+    \begin{itemize}
+        \item S = "l'élève est en 1ST"
+        \item I = "l'élève est interne"
+    \end{itemize}
+    \vfill
+    Calculer la quantité $P_I(S)$
+    \vfill
+\end{frame}
+
+\begin{frame}[fragile]{Calcul 3}
+    % Variations
+    On donne la fonction et sa dérivée
+    \[
+        f(x) = -6x^2 - 2x - 1 \qquad \qquad f'(x) = -12x -2
+    \]
+    Compléter le tableau de signes et de variations suivant
+    \begin{center}
+        \begin{tikzpicture}
+            \tkzTabInit[lgt=3,espcl=7]{$x$/1,Signe de $f'(x)$/2, Variations de $f(x)$/2}{\hspace{5cm}, \hspace{5cm}}%
+            \tkzTabLine{,,}%
+            \tkzTabVar{,}%
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}[fragile]{Calcul 4}
+    % probabilité
+    Calculer la probabilité $P(CC\overline{C})$
+    \begin{center}
+        \begin{tikzpicture}[grow=down, sloped, scale=1]
+            \tikzset{level 1/.style={sibling distance=6cm}}
+            \tikzset{level 2/.style={sibling distance=3cm}}
+            \tikzset{level 3/.style={sibling distance=1.5cm}}
+
+            \node {.}
+                child  {node {C}
+                    child {node {C}
+                        child {node {C}
+                            edge from parent
+                            node[above] {0.6}
+                        }
+                        child {node {$\overline{C}$}
+                            edge from parent
+                            node[above] {0.4}
+                        }
+                        edge from parent
+                        node[above] {0.6}
+                    }
+                    child  {node {$\overline{C}$}
+                        child {node {C}
+                            edge from parent
+                            node[above] {0.6}
+                        }
+                        child {node {$\overline{C}$}
+                            edge from parent
+                            node[above] {0.4}
+                        }
+                        edge from parent
+                        node[above] {0.4}
+                    }
+                    edge from parent
+                    node[above] {0.6}
+                }
+                child { node {$\overline{C}$}
+                    child {node {C}
+                        child {node {C}
+                            edge from parent
+                            node[above] {0.6}
+                        }
+                        child {node {$\overline{C}$}
+                            edge from parent
+                            node[above] {0.4}
+                        }
+                        edge from parent
+                        node[above] {0.6}
+                    }
+                    child {node {$\overline{C}$}
+                        child {node {C}
+                            edge from parent
+                            node[above] {0.6}
+                        }
+                        child {node {$\overline{C}$}
+                            edge from parent
+                            node[above] {0.4}
+                        }
+                        edge from parent
+                        node[above] {0.4}
+                    }
+                    edge from parent
+                    node[above] {0.4}
+                }%
+                ;
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{Fin}
+    \begin{center}
+        On retourne son papier.
+    \end{center}
+\end{frame}
+
+
+\end{document}
diff --git a/1ST/Questions_flashs/P5/QF_S20-2.pdf b/1ST/Questions_flashs/P5/QF_S20-2.pdf
new file mode 100644
index 0000000..98ae39e
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diff --git a/1ST/Questions_flashs/P5/QF_S20-2.tex b/1ST/Questions_flashs/P5/QF_S20-2.tex
new file mode 100755
index 0000000..ba86da4
--- /dev/null
+++ b/1ST/Questions_flashs/P5/QF_S20-2.tex
@@ -0,0 +1,155 @@
+\documentclass[12pt]{classPres}
+\usepackage{tkz-fct}
+\usepackage{pgfplots}
+\usetikzlibrary{decorations.markings}
+\pgfplotsset{compat=1.18}
+
+\author{}
+\title{}
+\date{}
+
+\begin{document}
+\begin{frame}{Questions flashs}
+    \begin{center}
+        \vfill
+        Première ST
+        \vfill
+        30 secondes par calcul
+        \vfill
+        \textbf{Calculatrice non autorisée}
+        \vfill
+        \tiny \jobname
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 1}
+    % Suite
+    Un prix diminue de 20\% tous les ans. En 2022, il était de 55\euro.
+    \vfill
+
+    On appelle $u_n$ la suite qui modélise ce prix.
+    \vfill
+
+    Quelle est la nature de la suite $(u_n)$, préciser ses paramètres.
+    \vfill
+\end{frame}
+
+\begin{frame}{Calcul 2}
+    % Opération ensembles
+    \begin{tabular}{|*{4}{c|}}
+        \hline
+        Section/regime & Interne & Externe & Total \\
+        \hline
+        1ST & 10 & 15 & 25 \\
+        \hline
+        1G & 14 & 17 & 31 \\
+        \hline
+        Total & 24 & 32 & 56 \\
+        \hline
+    \end{tabular}
+    \vfill
+    On note :
+    \begin{itemize}
+        \item S = "l'élève est en 1ST"
+        \item I = "l'élève est interne"
+    \end{itemize}
+    \vfill
+    Calculer la quantité $P(\overline{I} \cap S)$
+    \vfill
+\end{frame}
+
+\begin{frame}[fragile]{Calcul 3}
+    % Variations
+    On donne la fonction et sa dérivée
+    \[
+        f(x) = - 2x - 1 \qquad \qquad f'(x) = -2
+    \]
+    Compléter le tableau de signes et de variations suivant
+    \begin{center}
+        \begin{tikzpicture}
+            \tkzTabInit[lgt=3,espcl=7]{$x$/1,Signe de $f'(x)$/2, Variations de $f(x)$/2}{\hspace{5cm}, \hspace{5cm}}%
+            \tkzTabLine{,,}%
+            \tkzTabVar{,}%
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}[fragile]{Calcul 4}
+    % probabilitéz
+    Calculer la probabilité $P(\mbox{avoir exactement 2} C)$
+    \begin{center}
+        \begin{tikzpicture}[grow=down, sloped, scale=1]
+            \tikzset{level 1/.style={sibling distance=6cm}}
+            \tikzset{level 2/.style={sibling distance=3cm}}
+            \tikzset{level 3/.style={sibling distance=1.5cm}}
+
+            \node {.}
+                child  {node {C}
+                    child {node {C}
+                        child {node {C}
+                            edge from parent
+                            node[above] {0.6}
+                        }
+                        child {node {$\overline{C}$}
+                            edge from parent
+                            node[above] {0.4}
+                        }
+                        edge from parent
+                        node[above] {0.6}
+                    }
+                    child  {node {$\overline{C}$}
+                        child {node {C}
+                            edge from parent
+                            node[above] {0.6}
+                        }
+                        child {node {$\overline{C}$}
+                            edge from parent
+                            node[above] {0.4}
+                        }
+                        edge from parent
+                        node[above] {0.4}
+                    }
+                    edge from parent
+                    node[above] {0.6}
+                }
+                child { node {$\overline{C}$}
+                    child {node {C}
+                        child {node {C}
+                            edge from parent
+                            node[above] {0.6}
+                        }
+                        child {node {$\overline{C}$}
+                            edge from parent
+                            node[above] {0.4}
+                        }
+                        edge from parent
+                        node[above] {0.6}
+                    }
+                    child {node {$\overline{C}$}
+                        child {node {C}
+                            edge from parent
+                            node[above] {0.6}
+                        }
+                        child {node {$\overline{C}$}
+                            edge from parent
+                            node[above] {0.4}
+                        }
+                        edge from parent
+                        node[above] {0.4}
+                    }
+                    edge from parent
+                    node[above] {0.4}
+                }%
+                ;
+        \end{tikzpicture}
+    \end{center}
+\end{frame}
+
+\begin{frame}{Fin}
+    \begin{center}
+        On retourne son papier.
+    \end{center}
+\end{frame}
+
+
+\end{document}