diff --git a/4e/01_Probabilite/1P_situations.pdf b/4e/01_Probabilite/1P_situations.pdf
index 4aa7c0c..010ed6f 100644
Binary files a/4e/01_Probabilite/1P_situations.pdf and b/4e/01_Probabilite/1P_situations.pdf differ
diff --git a/4e/01_Probabilite/exos_proba.pdf b/4e/01_Probabilite/exos_proba.pdf
index d15f2f1..bfec74c 100644
Binary files a/4e/01_Probabilite/exos_proba.pdf and b/4e/01_Probabilite/exos_proba.pdf differ
diff --git a/4e/01_Probabilite/fig/boules.pdf b/4e/01_Probabilite/fig/boules.pdf
new file mode 100644
index 0000000..86d93d1
Binary files /dev/null and b/4e/01_Probabilite/fig/boules.pdf differ
diff --git a/4e/01_Probabilite/fig/boules.svg b/4e/01_Probabilite/fig/boules.svg
new file mode 100644
index 0000000..de80dfa
--- /dev/null
+++ b/4e/01_Probabilite/fig/boules.svg
@@ -0,0 +1,222 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="297.41559mm"
+   height="38.964119mm"
+   viewBox="0 0 1053.8348 138.06184"
+   id="svg2"
+   version="1.1"
+   inkscape:version="0.91 r13725"
+   sodipodi:docname="boules.svg">
+  <defs
+     id="defs4" />
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="0.5017284"
+     inkscape:cx="500.13032"
+     inkscape:cy="69.030933"
+     inkscape:document-units="px"
+     inkscape:current-layer="layer1"
+     showgrid="false"
+     fit-margin-top="5"
+     fit-margin-left="5"
+     fit-margin-right="5"
+     fit-margin-bottom="5"
+     inkscape:window-width="1366"
+     inkscape:window-height="715"
+     inkscape:window-x="0"
+     inkscape:window-y="29"
+     inkscape:window-maximized="1" />
+  <metadata
+     id="metadata7">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Calque 1"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(128.08308,-457.1502)">
+    <path
+       style="opacity:0.46200005;fill:#000000;fill-opacity:1;stroke:#000000;stroke-width:7;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+       id="path4136"
+       sodipodi:type="arc"
+       sodipodi:cx="-59.052109"
+       sodipodi:cy="526.18109"
+       sodipodi:rx="47.834644"
+       sodipodi:ry="47.834644"
+       sodipodi:start="3.8430579"
+       sodipodi:end="3.8404399"
+       sodipodi:open="true"
+       d="m -95.592871,495.31159 a 47.834644,47.834644 0 0 1 67.386338,-5.69146 47.834644,47.834644 0 0 1 5.735563,67.3826 47.834644,47.834644 0 0 1 -67.37883,5.77966 47.834644,47.834644 0 0 1 -5.823762,-67.37503" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:45px;line-height:125%;font-family:Sans;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="-74.432999"
+       y="542.58368"
+       id="text4138"
+       sodipodi:linespacing="125%"><tspan
+         sodipodi:role="line"
+         id="tspan4140"
+         x="-74.432999"
+         y="542.58368">A</tspan></text>
+    <path
+       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:7;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+       id="path4136-6"
+       sodipodi:type="arc"
+       sodipodi:cx="246.20554"
+       sodipodi:cy="526.18109"
+       sodipodi:rx="47.834644"
+       sodipodi:ry="47.834644"
+       sodipodi:start="3.8430579"
+       sodipodi:end="3.8404399"
+       sodipodi:open="true"
+       d="m 209.66477,495.31159 a 47.834644,47.834644 0 0 1 67.38634,-5.69146 47.834644,47.834644 0 0 1 5.73556,67.3826 47.834644,47.834644 0 0 1 -67.37883,5.77966 47.834644,47.834644 0 0 1 -5.82376,-67.37503" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:45px;line-height:125%;font-family:Sans;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="230.82465"
+       y="542.58368"
+       id="text4138-4"
+       sodipodi:linespacing="125%"><tspan
+         sodipodi:role="line"
+         id="tspan4140-9"
+         x="230.82465"
+         y="542.58368">C</tspan></text>
+    <path
+       style="opacity:0.46200005;fill:#000000;fill-opacity:1;stroke:#000000;stroke-width:7;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+       id="path4136-8"
+       sodipodi:type="arc"
+       sodipodi:cx="551.46313"
+       sodipodi:cy="526.18109"
+       sodipodi:rx="47.834644"
+       sodipodi:ry="47.834644"
+       sodipodi:start="3.8430579"
+       sodipodi:end="3.8404399"
+       sodipodi:open="true"
+       d="m 514.92237,495.31159 a 47.834644,47.834644 0 0 1 67.38634,-5.69146 47.834644,47.834644 0 0 1 5.73556,67.3826 47.834644,47.834644 0 0 1 -67.37883,5.77966 47.834644,47.834644 0 0 1 -5.82376,-67.37503" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:45px;line-height:125%;font-family:Sans;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="536.08228"
+       y="542.58368"
+       id="text4138-2"
+       sodipodi:linespacing="125%"><tspan
+         sodipodi:role="line"
+         id="tspan4140-8"
+         x="536.08228"
+         y="542.58368">E</tspan></text>
+    <path
+       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:7;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+       id="path4136-65"
+       sodipodi:type="arc"
+       sodipodi:cx="704.09198"
+       sodipodi:cy="526.18109"
+       sodipodi:rx="47.834644"
+       sodipodi:ry="47.834644"
+       sodipodi:start="3.8430579"
+       sodipodi:end="3.8404399"
+       sodipodi:open="true"
+       d="m 667.55122,495.31159 a 47.834644,47.834644 0 0 1 67.38634,-5.69146 47.834644,47.834644 0 0 1 5.73556,67.3826 47.834644,47.834644 0 0 1 -67.37883,5.77966 47.834644,47.834644 0 0 1 -5.82376,-67.37503" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:45px;line-height:125%;font-family:Sans;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="688.71112"
+       y="542.58368"
+       id="text4138-26"
+       sodipodi:linespacing="125%"><tspan
+         sodipodi:role="line"
+         id="tspan4140-84"
+         x="688.71112"
+         y="542.58368">F</tspan></text>
+    <path
+       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:7;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+       id="path4136-5"
+       sodipodi:type="arc"
+       sodipodi:cx="856.72076"
+       sodipodi:cy="526.18109"
+       sodipodi:rx="47.834644"
+       sodipodi:ry="47.834644"
+       sodipodi:start="3.8430579"
+       sodipodi:end="3.8404399"
+       sodipodi:open="true"
+       d="m 820.18,495.31159 a 47.834644,47.834644 0 0 1 67.38634,-5.69146 47.834644,47.834644 0 0 1 5.73556,67.3826 47.834644,47.834644 0 0 1 -67.37883,5.77966 47.834644,47.834644 0 0 1 -5.82376,-67.37503" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:45px;line-height:125%;font-family:Sans;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="841.3399"
+       y="542.58368"
+       id="text4138-9"
+       sodipodi:linespacing="125%"><tspan
+         sodipodi:role="line"
+         id="tspan4140-95"
+         x="841.3399"
+         y="542.58368">G</tspan></text>
+    <path
+       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:7;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+       id="path4136-69"
+       sodipodi:type="arc"
+       sodipodi:cx="93.576714"
+       sodipodi:cy="526.18109"
+       sodipodi:rx="47.834644"
+       sodipodi:ry="47.834644"
+       sodipodi:start="3.8430579"
+       sodipodi:end="3.8404399"
+       sodipodi:open="true"
+       d="m 57.035952,495.31159 a 47.834644,47.834644 0 0 1 67.386338,-5.69146 47.834644,47.834644 0 0 1 5.73556,67.3826 47.834644,47.834644 0 0 1 -67.378827,5.77966 47.834644,47.834644 0 0 1 -5.823762,-67.37503" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:45px;line-height:125%;font-family:Sans;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="78.195824"
+       y="542.58368"
+       id="text4138-7"
+       sodipodi:linespacing="125%"><tspan
+         sodipodi:role="line"
+         id="tspan4140-0"
+         x="78.195824"
+         y="542.58368">B</tspan></text>
+    <path
+       style="opacity:0.46200005;fill:#000000;fill-opacity:1;stroke:#000000;stroke-width:7;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"
+       id="path4136-54"
+       sodipodi:type="arc"
+       sodipodi:cx="398.83435"
+       sodipodi:cy="526.18109"
+       sodipodi:rx="47.834644"
+       sodipodi:ry="47.834644"
+       sodipodi:start="3.8430579"
+       sodipodi:end="3.8404399"
+       sodipodi:open="true"
+       d="m 362.29359,495.31159 a 47.834644,47.834644 0 0 1 67.38634,-5.69146 47.834644,47.834644 0 0 1 5.73556,67.3826 47.834644,47.834644 0 0 1 -67.37883,5.77966 47.834644,47.834644 0 0 1 -5.82376,-67.37503" />
+    <text
+       xml:space="preserve"
+       style="font-style:normal;font-weight:normal;font-size:45px;line-height:125%;font-family:Sans;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
+       x="383.45346"
+       y="542.58368"
+       id="text4138-8"
+       sodipodi:linespacing="125%"><tspan
+         sodipodi:role="line"
+         id="tspan4140-5"
+         x="383.45346"
+         y="542.58368">D</tspan></text>
+  </g>
+</svg>