diff --git a/module2/exo1/toy_notebook_fr.ipynb b/module2/exo1/toy_notebook_fr.ipynb
index b3c33b1047c16d43868c4628ff8bb218a305fd87..90477912bd429a931adffe42cc8cb71aab63eadf 100644
--- a/module2/exo1/toy_notebook_fr.ipynb
+++ b/module2/exo1/toy_notebook_fr.ipynb
@@ -145,8 +145,29 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    " \tTexte<sup>2<sup>"
+    " \t$Texte \\pi$ "
    ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "$P[X²+Y²\\leq 1] = \\pi/4$"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "$A²*4+ \\pi$"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {