diff --git a/your-code/main.ipynb b/your-code/main.ipynb
index 1ecb24d..9c6180e 100644
--- a/your-code/main.ipynb
+++ b/your-code/main.ipynb
@@ -34,11 +34,31 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 3,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[3, 4, 5, 6, 7, 8, 9, 10, 11, 12]\n"
+     ]
+    }
+   ],
    "source": [
-    "# your code here\n"
+    "# your code here\n",
+    "num_list = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]\n",
+    "updated_list = []\n",
+    "\n",
+    "add_two = lambda x: x + 2\n",
+    "\n",
+    "def update_list(lst, func):\n",
+    "    for num in lst:\n",
+    "        updated_list.append(func(num))\n",
+    "\n",
+    "\n",
+    "update_list(num_list, add_two)\n",
+    "print(updated_list)"
    ]
   },
   {
@@ -52,11 +72,12 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": 5,
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Your code here:\n"
+    "# Your code here:\n",
+    "conv = lambda celsius: celsius + 273.15"
    ]
   },
   {
@@ -68,13 +89,28 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": 7,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[285.15, 296.15, 311.15, 218.14999999999998, 297.15]"
+      ]
+     },
+     "execution_count": 7,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "temps = [12, 23, 38, -55, 24]\n",
     "\n",
-    "# Your code here:\n"
+    "# Your code here:\n",
+    "conv = lambda celsius: celsius + 273.15\n",
+    "\n",
+    "temp = list(map(conv, temps))\n",
+    "temp"
    ]
   },
   {
@@ -88,11 +124,28 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": 22,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "1"
+      ]
+     },
+     "execution_count": 22,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
-    "# Your code here:\n"
+    "# Your code here:\n",
+    "\n",
+    "\n",
+    "mod = lambda x, y: 1 if x % y == 0 or y % x == 0 else 0\n",
+    "    \n",
+    "res = mod(10,2)\n",
+    "res"
    ]
   },
   {
@@ -106,16 +159,26 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 6,
+   "execution_count": 56,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "1"
+      ]
+     },
+     "execution_count": 56,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
-    "def divisor(a):\n",
-    "    \"\"\"\n",
-    "    input: a number\n",
-    "    output: a function that returns 1 if the number is divisible by another number (to be passed later) and zero otherwise\n",
-    "    \"\"\"\n",
-    "    # Your code here:\n"
+    "# Your code here:\n",
+    "def divisor(x):\n",
+    "    mod = lambda y: 1 if x % y == 0 or y % x == 0 else 0\n",
+    "    return mod\n",
+    "\n"
    ]
   },
   {
@@ -127,11 +190,11 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": 57,
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Your code here:\n"
+    "divisible5 = divisor(5) "
    ]
   },
   {
@@ -143,20 +206,44 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 59,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "1"
+      ]
+     },
+     "execution_count": 59,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
-    "divisible5(10)"
+    "result = divisible5(5)\n",
+    "result"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 61,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "0"
+      ]
+     },
+     "execution_count": 61,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
-    "divisible5(8)"
+    "result = divisible5(8)\n",
+    "result"
    ]
   },
   {
@@ -209,17 +296,29 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 9,
+   "execution_count": 66,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[2, 3, 4, 5]\n"
+     ]
+    }
+   ],
    "source": [
+    "#In the following challenge, we will combine two lists using a lambda expression in a list comprehension.\n",
+    "\n",
+    "#To do this, we will need to introduce the zip function\n",
+    "\n",
     "list1 = [1,2,4,4]\n",
     "list2 = [2,3,3,5]\n",
-    "## Zip the lists together \n",
     "\n",
-    "## Print the zipped list \n",
+    "res=[(lambda x, y: x if x > y else y)(x, y) for x, y in zip(list1, list2)]\n",
     "\n",
-    "## Use a lambda expression to compare if: list1 element > list2 element\n"
+    "print(res)\n",
+    "\n"
    ]
   },
   {
@@ -242,14 +341,25 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 10,
+   "execution_count": 68,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[('Political Science', 'Essay'), ('Computer Science', 'Homework'), ('Engineering', 'Lab'), ('Mathematics', 'Module')]\n"
+     ]
+    }
+   ],
    "source": [
     "list1 = ['Engineering', 'Computer Science', 'Political Science', 'Mathematics']\n",
     "list2 = ['Lab', 'Homework', 'Essay', 'Module']\n",
     "\n",
-    "# Your code here:\n"
+    "# Your code here:\n",
+    "list3 = sorted(zip(list1, list2), key=lambda x: x[1][0])\n",
+    "\n",
+    "print(list3)"
    ]
   },
   {
@@ -282,7 +392,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -296,7 +406,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.3"
+   "version": "3.9.13"
   }
  },
  "nbformat": 4,