diff --git a/Python Tutorial - Basics.ipynb b/Python Tutorial - Basics.ipynb
index fd8aeb01a868a4e06a90a892fb6ba7477199737c..6a826c33e1245a509177e4e3ce327ef1d85db8ec 100755
--- a/Python Tutorial - Basics.ipynb	
+++ b/Python Tutorial - Basics.ipynb	
@@ -440,7 +440,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "### Tupel"
+    "### Tuple"
    ]
   },
   {
@@ -945,36 +945,19 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "# you can even pass functions as function arguments\n",
-    "def add_ten(func,a,b):\n",
-    "    '''\n",
-    "    my function\n",
-    "    '''\n",
-    "    return func(a,b)+10\n",
-    "\n",
-    "print(add_ten(sum_2,0,1))"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
-   "source": [
-    "import sys\n",
-    "sys.getrecursionlimit()\n",
-    "#sys.setrecursionlimit()"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 2,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "1.54 ms ± 69.5 µs per loop (mean ± std. dev. of 7 runs, 1000 loops each)\n",
+      "1.02 ms ± 23.7 µs per loop (mean ± std. dev. of 7 runs, 1000 loops each)\n",
+      "842 µs ± 22 µs per loop (mean ± std. dev. of 7 runs, 1000 loops each)\n"
+     ]
+    }
+   ],
    "source": [
     "# recursion works like this (std limit 3000)\n",
     "def factorial_slow(n):\n",
@@ -982,7 +965,7 @@
     "    if n==1:\n",
     "        return n\n",
     "    else:\n",
-    "        return n*factorial(n-1)\n",
+    "        return n*factorial_slow(n-1)\n",
     "\n",
     "# lets compare the execution time of recursion to a while loop\n",
     "def factorial_fast(m):\n",
@@ -1013,6 +996,22 @@
     "# for is faster than while\n"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# you can even pass functions as function arguments\n",
+    "def add_ten(func,a,b):\n",
+    "    '''\n",
+    "    my function\n",
+    "    '''\n",
+    "    return func(a,b)+10\n",
+    "\n",
+    "print(add_ten(sum_2,0,1))"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -1800,7 +1799,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.6.8"
+   "version": "3.7.4"
   }
  },
  "nbformat": 4,