diff --git a/002-basic-control-structures/Basic control structures.ipynb b/002-basic-control-structures/Basic control structures.ipynb
index 3aeaea5..7b736e2 100644
--- a/002-basic-control-structures/Basic control structures.ipynb	
+++ b/002-basic-control-structures/Basic control structures.ipynb	
@@ -1117,12 +1117,24 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 1,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "ename": "ZeroDivisionError",
+     "evalue": "division by zero",
+     "output_type": "error",
+     "traceback": [
+      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
+      "\u001b[0;31mZeroDivisionError\u001b[0m                         Traceback (most recent call last)",
+      "Cell \u001b[0;32mIn[1], line 3\u001b[0m\n\u001b[1;32m      1\u001b[0m y \u001b[38;5;241m=\u001b[39m \u001b[38;5;241m120\u001b[39m\n\u001b[1;32m      2\u001b[0m \u001b[38;5;28;01mfor\u001b[39;00m z \u001b[38;5;129;01min\u001b[39;00m \u001b[38;5;28mrange\u001b[39m(\u001b[38;5;241m5\u001b[39m):\n\u001b[0;32m----> 3\u001b[0m     y \u001b[38;5;241m=\u001b[39m \u001b[43my\u001b[49m\u001b[43m \u001b[49m\u001b[38;5;241;43m/\u001b[39;49m\u001b[43m \u001b[49m\u001b[43mz\u001b[49m\n\u001b[1;32m      4\u001b[0m     \u001b[38;5;28mprint\u001b[39m(\u001b[38;5;124m\"\u001b[39m\u001b[38;5;124mWhen z is\u001b[39m\u001b[38;5;124m\"\u001b[39m, z, \u001b[38;5;124m\"\u001b[39m\u001b[38;5;124mthen y is\u001b[39m\u001b[38;5;124m\"\u001b[39m, y)\n",
+      "\u001b[0;31mZeroDivisionError\u001b[0m: division by zero"
+     ]
+    }
+   ],
    "source": [
     "y = 120\n",
-    "for z in range(1, 5, 2):\n",
+    "for z in range(5):\n",
     "    y = y / z\n",
     "    print(\"When z is\", z, \"then y is\", y)"
    ]
@@ -2546,7 +2558,7 @@
  "metadata": {
   "celltoolbar": "Slideshow",
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -2560,7 +2572,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.11"
+   "version": "3.11.6"
   },
   "livereveal": {
    "theme": "beige",
@@ -2568,5 +2580,5 @@
   }
  },
  "nbformat": 4,
- "nbformat_minor": 1
+ "nbformat_minor": 4
 }