diff --git a/117.ipynb b/117.ipynb
new file mode 100644
index 000000000..d12bcf604
--- /dev/null
+++ b/117.ipynb
@@ -0,0 +1,69 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 13,
+   "metadata": {
+    "collapsed": false
+   },
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "请输入一个较大的大于等于0的整数，作为上界，回车结束。500\n",
+      "请输入一个较小的大于等于0的整数，作为下界，回车结束。10\n",
+      "请输入一个大于0的整数，作为随机整数的数目，回车结束。5\n",
+      "37.749172176353746\n"
+     ]
+    }
+   ],
+   "source": [
+    "import math,random\n",
+    "def guess_game():\n",
+    "    k = int(input('请输入一个较大的大于等于0的整数，作为上界，回车结束。'))\n",
+    "    n = int(input('请输入一个较小的大于等于0的整数，作为下界，回车结束。'))\n",
+    "    m = int(input('请输入一个大于0的整数，作为随机整数的数目，回车结束。'))\n",
+    "    total=0\n",
+    "    guess_times=0\n",
+    "    while guess_times < m:\n",
+    "        number = random.randint(n,k)\n",
+    "        total+=number\n",
+    "        guess_times += 1\n",
+    "    \n",
+    "    print(math.sqrt(total))\n",
+    "guess_game()    "
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": true
+   },
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "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": "3.6.0"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}