diff --git a/1103HW_1_Kao.ipynb b/1103HW_1_Kao.ipynb
new file mode 100644
index 0000000..339e4f3
--- /dev/null
+++ b/1103HW_1_Kao.ipynb
@@ -0,0 +1,106 @@
+{
+ "cells": [
+  {
+   "cell_type": "code",
+   "execution_count": 13,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "輸入一個數字10000\n",
+      "前三胎生有生女的機率為 0.8714\n"
+     ]
+    }
+   ],
+   "source": [
+    "import numpy as np\n",
+    "\n",
+    "n=int(input(\"輸入一個數字\"))\n",
+    "g=0\n",
+    "for i in range(1,n+1):\n",
+    "    #print(\"第\",i,\"次\")\n",
+    "    k = np.random.randint(1,100)\n",
+    "    a=0\n",
+    "    \n",
+    "    while a<3:\n",
+    "        if k>49:\n",
+    "            a+=1\n",
+    "            #print(\"男\")            \n",
+    "            k = np.random.randint(1,100)\n",
+    "            if k>49:\n",
+    "                a+=1\n",
+    "                #print(\"男\")\n",
+    "                k = np.random.randint(1,100)\n",
+    "                if k>49:\n",
+    "                    a+=1\n",
+    "                    #print(\"男\")\n",
+    "                                                            \n",
+    "                else:   \n",
+    "                    a+=1\n",
+    "                    #print(\"女\")\n",
+    "                    g+=1\n",
+    "                    break\n",
+    "                \n",
+    "            else:\n",
+    "                a+=1\n",
+    "                #print(\"女\")\n",
+    "                g+=1\n",
+    "                break\n",
+    "            \n",
+    "        else:\n",
+    "            a+=1\n",
+    "            #print(\"女\")\n",
+    "            g+=1\n",
+    "            break\n",
+    "        \n",
+    "print(\"前三胎生有生女的機率為\",g/n)\n",
+    "#p=g/n\n",
+    "#print(\"前三胎有女的機率為\",p)\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "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": "3.6.5"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}