diff --git a/lab-python-functions.ipynb b/lab-python-functions.ipynb
index 44d337b..38e3cf0 100644
--- a/lab-python-functions.ipynb
+++ b/lab-python-functions.ipynb
@@ -43,11 +43,93 @@
     "\n",
     "\n"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "id": "e8c11325",
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "\n",
+      "Available products: t-shirt, mug, hat, book, keychain\n",
+      "\n",
+      "Order Statistics:\n",
+      "Total Products Ordered: 2\n",
+      "Percentage of Products Ordered: 40.0 %\n",
+      "\n",
+      "Updated Inventory:\n",
+      "t-shirt: 56\n",
+      "mug: 82\n",
+      "hat: 70\n",
+      "book: 64\n",
+      "keychain: 55\n"
+     ]
+    }
+   ],
+   "source": [
+    "#1.\n",
+    "def initialize_inventory(products):\n",
+    "    inventory = {}\n",
+    "    for item in products:\n",
+    "        quantity = int(input(f\"Enter quantity for '{item}': \"))\n",
+    "        inventory[item] = quantity\n",
+    "    return inventory\n",
+    "\n",
+    "#2.\n",
+    "def get_customer_orders():\n",
+    "    customer_orders = set()\n",
+    "    print(\"\\nAvailable products: t-shirt, mug, hat, book, keychain\")\n",
+    "    continue_ordering = \"yes\"\n",
+    "    while continue_ordering == \"yes\":\n",
+    "        product_name = input(\"Enter the name of a product you want to order: \")\n",
+    "        customer_orders.add(product_name)\n",
+    "        continue_ordering = input(\"Do you want to add another product? (yes/no): \")\n",
+    "    return customer_orders\n",
+    "\n",
+    "#3.\n",
+    "def update_inventory(customer_orders, inventory):\n",
+    "    for item in customer_orders:\n",
+    "        if item in inventory:\n",
+    "            inventory[item] -= 1\n",
+    "\n",
+    "#4.\n",
+    "def calculate_order_statistics(customer_orders, products):\n",
+    "    total_products_ordered = len(customer_orders)\n",
+    "    percentage_ordered = (total_products_ordered / len(products)) * 100\n",
+    "    return (total_products_ordered, percentage_ordered)\n",
+    "\n",
+    "#5.\n",
+    "def print_order_statistics(order_statistics):\n",
+    "    print(\"\\nOrder Statistics:\")\n",
+    "    print(\"Total Products Ordered:\", order_statistics[0])\n",
+    "    print(\"Percentage of Products Ordered:\", order_statistics[1], \"%\")    \n",
+    "\n",
+    "#6.\n",
+    "def print_updated_inventory(inventory):\n",
+    "    print(\"\\nUpdated Inventory:\")\n",
+    "    for item, qty in inventory.items():\n",
+    "        print(f\"{item}: {qty}\")\n",
+    "\n",
+    "#7.\n",
+    "products = [\"t-shirt\", \"mug\", \"hat\", \"book\", \"keychain\"]\n",
+    "\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",
+    "\n",
+    "print_order_statistics(order_statistics)\n",
+    "print_updated_inventory(inventory)"
+   ]
   }
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "Python 3",
    "language": "python",
    "name": "python3"
   },
@@ -61,7 +143,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.13.5"
   }
  },
  "nbformat": 4,