diff --git a/1ST/Questions_flashs/P3/QF_S05-1.pdf b/1ST/Questions_flashs/P3/QF_S05-1.pdf
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diff --git a/1ST/Questions_flashs/P3/QF_S05-1.tex b/1ST/Questions_flashs/P3/QF_S05-1.tex
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+\documentclass[14pt]{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
+        \tiny \jobname
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 1}
+    % Dérivation
+    Déterminer la fonction dérivée de
+    \[
+        f(x) = 9x^2 - 10 + 5x
+    \]
+\end{frame}
+
+\begin{frame}{Calcul 2}
+    % inéquations
+    Résoudre l'équation suivante
+    \[
+        5x - 15 \geq 5
+    \]
+\end{frame}
+
+\begin{frame}[fragile]{Calcul 3}
+    % tableau signe et variations
+    On a fait le calcul suivant
+    \[
+        f(x) \geq 0 \qquad \cdots \qquad x \leq 5
+    \]
+    \vfill
+    Tracer le tableur de signe de $f(x)$ correspondant.
+    \vfill
+
+\end{frame}
+
+\begin{frame}[fragile]{Calcul 4}
+    Calculer la probabilité $P(CCC)$
+    \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/P3/QF_S05-2.pdf b/1ST/Questions_flashs/P3/QF_S05-2.pdf
new file mode 100644
index 0000000..cd0ab4a
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diff --git a/1ST/Questions_flashs/P3/QF_S05-2.tex b/1ST/Questions_flashs/P3/QF_S05-2.tex
new file mode 100755
index 0000000..b33aef4
--- /dev/null
+++ b/1ST/Questions_flashs/P3/QF_S05-2.tex
@@ -0,0 +1,128 @@
+\documentclass[14pt]{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
+        \tiny \jobname
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 1}
+    % Dérivation
+    Déterminer la fonction dérivée de
+    \[
+        f(x) = -5x + x^2 - 10
+    \]
+\end{frame}
+
+\begin{frame}{Calcul 2}
+    % inéquations
+    Résoudre l'équation suivante
+    \[
+        6x - 15 \geq 5x
+    \]
+\end{frame}
+
+\begin{frame}[fragile]{Calcul 3}
+    % tableau signe et variations
+    On a fait le calcul suivant
+    \[
+        f(x) \geq 0 \qquad \cdots \qquad x \geq 10
+    \]
+    \vfill
+    Tracer le tableur de signe de $f(x)$ correspondant.
+    \vfill
+
+\end{frame}
+
+\begin{frame}[fragile]{Calcul 4}
+    Calculer la probabilité $P(C\; \overline{C}\; \overline{C})$
+    \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}