diff --git a/Seth_A99501/day12.ipynb b/Seth_A99501/day12.ipynb
new file mode 100644
index 00000000..a8f69575
--- /dev/null
+++ b/Seth_A99501/day12.ipynb
@@ -0,0 +1,54 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "The factorial of 5 is 120\n"
+     ]
+    }
+   ],
+   "source": [
+    "def factorial(x):\n",
+    "    #a recursive function to find the factorial of an integer\n",
+    "\n",
+    "    if x == 1:\n",
+    "        return 1\n",
+    "    elif x<=0:\n",
+    "        print(\"No factorial\")\n",
+    "    else:\n",
+    "        return (x * factorial(x-1))\n",
+    "\n",
+    "\n",
+    "num = int(input('Enter a number:'))\n",
+    "print(\"The factorial of\", num, \"is\", factorial(num))"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.11.6"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}