diff --git a/lab-python-functions.ipynb b/lab-python-functions.ipynb
index 44d337b..e546f76 100644
--- a/lab-python-functions.ipynb
+++ b/lab-python-functions.ipynb
@@ -43,11 +43,183 @@
     "\n",
     "\n"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 135,
+   "id": "aed5288b",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "products=[\"t-shirt\",\"mug\",\"hat\",\"book\",\"keychain\"]\n",
+    "\n",
+    "def initialize_inventory(products):\n",
+    "    inventory={}\n",
+    "    for product in products:\n",
+    "        user_input=int(input(\"enter the quanity\"))\n",
+    "        inventory[product]=user_input\n",
+    "    return inventory\n",
+    "    \n",
+    " \n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 136,
+   "id": "bf722284",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "{'t-shirt': 10, 'mug': 20, 'hat': 30, 'book': 40, 'keychain': 50}"
+      ]
+     },
+     "execution_count": 136,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "initialize_inventory(products)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 137,
+   "id": "10a36a48",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "\n",
+    "def get_customer_orders():\n",
+    "    customer_orders=set()\n",
+    "    for i in range(3):\n",
+    "        user_input=input(\"enter the name of the product\")\n",
+    "        customer_orders.add(user_input)\n",
+    "    return customer_orders\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 138,
+   "id": "ef7a8ec9",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "{'book', 'hat', 'mug'}"
+      ]
+     },
+     "execution_count": 138,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "get_customer_orders()"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 139,
+   "id": "516a9c4e",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def update_inventory(customer_orders,inventory):\n",
+    "    for product in customer_orders:\n",
+    "        if product in inventory:\n",
+    "            inventory[product]-=1\n",
+    "    return inventory"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 140,
+   "id": "7d9f031e",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "{'t-shirt': 10, 'mug': 17, 'hat': 27, 'book': 37, 'keychain': 50}"
+      ]
+     },
+     "execution_count": 140,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "update_inventory(customer_orders,inventory)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 141,
+   "id": "68b3d978",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def calculate_order_statistics(customer_orders,products):\n",
+    "    total_products_order=len(customer_orders)\n",
+    "    percentage=(total_products_order / len(products)) * 100\n",
+    "    order_statistics=(total_products_order,percentage)\n",
+    "    return order_statistics"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 142,
+   "id": "abbad890",
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "(3, 60.0)"
+      ]
+     },
+     "execution_count": 142,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "calculate_order_statistics(customer_orders,products)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 143,
+   "id": "fcca9d9a",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def print_order_statistics(order_statistics):\n",
+    "   \n",
+    "    print(f\"Total products ordered: {order_statistics[0]}\")\n",
+    "    print(f\"Percentage of unique products ordered: {order_statistics[1]:.2f}%\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 144,
+   "id": "f2698e66",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def print_updated_inventory(inventory):\n",
+    "    for product, qty in inventory.items():\n",
+    "        print(f\"{product}: {qty}\")"
+   ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "Python 3",
    "language": "python",
    "name": "python3"
   },
@@ -61,7 +233,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.11.9"
   }
  },
  "nbformat": 4,