diff --git a/sum23/lecture_materials/03_Using_Functions/lec_03_Using_Functions_solutions.ipynb b/sum23/lecture_materials/03_Using_Functions/lec_03_Using_Functions_solutions.ipynb
index 38b1817a857f59d5c5c4b061509817c0f557752f..511e2084fb87a641df4df035c43fe0bc5d359cea 100644
--- a/sum23/lecture_materials/03_Using_Functions/lec_03_Using_Functions_solutions.ipynb
+++ b/sum23/lecture_materials/03_Using_Functions/lec_03_Using_Functions_solutions.ipynb
@@ -33,9 +33,19 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 1,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "False\n",
+      "True\n",
+      "True\n"
+     ]
+    }
+   ],
    "source": [
     "print(7+3 == 9 and 4/0 == 0)              # False\n",
     "print(7 + 3 == 10 or 4/0 == 0)            # True\n",
@@ -777,7 +787,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 59,
+   "execution_count": 2,
    "metadata": {},
    "outputs": [
     {
@@ -787,7 +797,7 @@
      "traceback": [
       "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
       "\u001b[0;31mNameError\u001b[0m                                 Traceback (most recent call last)",
-      "Cell \u001b[0;32mIn[59], line 2\u001b[0m\n\u001b[1;32m      1\u001b[0m \u001b[38;5;66;03m# Let's try to find square root of 10\u001b[39;00m\n\u001b[0;32m----> 2\u001b[0m \u001b[43msqrt\u001b[49m(\u001b[38;5;241m10\u001b[39m) \u001b[38;5;66;03m# doesn't work because it is part of math module\u001b[39;00m\n",
+      "Cell \u001b[0;32mIn[2], line 2\u001b[0m\n\u001b[1;32m      1\u001b[0m \u001b[38;5;66;03m# Let's try to find square root of 10\u001b[39;00m\n\u001b[0;32m----> 2\u001b[0m \u001b[43msqrt\u001b[49m(\u001b[38;5;241m10\u001b[39m) \u001b[38;5;66;03m# doesn't work because it is part of math module\u001b[39;00m\n",
       "\u001b[0;31mNameError\u001b[0m: name 'sqrt' is not defined"
      ]
     }
@@ -806,7 +816,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 60,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [],
    "source": [