diff --git a/lab-python-functions.ipynb b/lab-python-functions.ipynb
index 44d337b..a13488e 100644
--- a/lab-python-functions.ipynb
+++ b/lab-python-functions.ipynb
@@ -43,6 +43,79 @@
     "\n",
     "\n"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "5c7a17d0",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
+    "\n",
+    "inventory = {}\n",
+    "\n",
+    "#1\n",
+    "def initialize_inventory(products):\n",
+    "    inventory = {}\n",
+    "    for product in products:\n",
+    "        quantity = int(input(f\"Enter quantity product {product}: \"))\n",
+    "        inventory[product] = quantity\n",
+    "    return inventory \n",
+    "\n",
+    "#2\n",
+    "def get_customer_orders():\n",
+    "    customer_orders = set()\n",
+    "    print(\"Enter the product you want to order.\")\n",
+    "    print (\"Type OK when it's ok.\")\n",
+    "    while True:\n",
+    "        order = input(\"Product name: \")\n",
+    "        if order.lower() == \"OK\":\n",
+    "            break\n",
+    "        customer_orders.add(order)\n",
+    "    return customer_orders\n",
+    "\n",
+    "#3\n",
+    "def update_inventory(customer_orders, inventory):\n",
+    "    for order in customer_orders:\n",
+    "        if order in inventory and inventory[order] > 0:\n",
+    "            inventory [order] -= 1\n",
+    "\n",
+    "#4\n",
+    "def calculate_order_statistics(customer_orders, products):\n",
+    "    total_products_ordered = len(customer_orders)\n",
+    "    percent_unique_product = (total_products_ordered / len(products)) * 100 if products else 0\n",
+    "    return total_products_ordered, percent_unique_product\n",
+    "\n",
+    "#5\n",
+    "def print_order_statistics (order_statistics):\n",
+    "    total_products_ordered, percent_unique_product = order_statistics\n",
+    "    print (f\"Order Statistics:\")\n",
+    "    print (f\"Total of the products ordered : {total_products_ordered}\")\n",
+    "    print (f\"Percentage of unique products ordered: {percent_unique_product:.2f}%\")\n",
+    "\n",
+    "#6\n",
+    "def print_updated_inventory(inventory):\n",
+    "    print(\"Updated Inventory\")\n",
+    "    for product, quantity in inventory.items():\n",
+    "        print(f\"{product: {quantity}}\")"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "id": "c03ac5e7",
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def exe():\n",
+    "    inventory = initialize_inventory(products)\n",
+    "    customer_orders = get_customer_orders()\n",
+    "    update_inventory(customer_orders, inventory)\n",
+    "    order_statistics = calculate_order_statistics(customer_orders, products)\n",
+    "    print_order_statistics(order_statistics)\n",
+    "    print_updated_inventory(inventory)"
+   ]
   }
  ],
  "metadata": {