diff --git a/your-code/challenges.ipynb b/your-code/challenges.ipynb
index ba91b3f..4f28c1b 100644
--- a/your-code/challenges.ipynb
+++ b/your-code/challenges.ipynb
@@ -11,13 +11,29 @@
     "**In the cell below, define a variable `tup` with a single element `\"I\"`.**\n"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": []
+  },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 15,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "I\n"
+     ]
+    }
+   ],
    "source": [
-    "# Your code here"
+    "# Your code here \n",
+    "tup = (\"I\")\n",
+    "print (tup)\n",
+    "\n"
    ]
   },
   {
@@ -31,11 +47,22 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 16,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "<class 'str'>\n"
+     ]
+    }
+   ],
    "source": [
-    "# Your code here"
+    "# Your code here\n",
+    "print (type (tup ))\n",
+    "\n",
+    "\n"
    ]
   },
   {
@@ -53,13 +80,27 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 36,
    "metadata": {
     "scrolled": true
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['I', ['r', 'o', 'n', 'h', ' a', 'c', 'k']]\n"
+     ]
+    }
+   ],
    "source": [
     "# Your code here\n",
+    "tup = [\"I\"]\n",
+    "tap = ['r', 'o', 'n', 'h',' a', 'c', 'k' ]\n",
+    "tup.append(tap)\n",
+    "print (tup)\n",
+    "\n",
+    "\n",
     "\n",
     "# Your explanation here\n",
     "# You can :) "
@@ -80,11 +121,22 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 38,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['I', 'r', 'o', 'n', 'h', ' a', 'c', 'k']\n"
+     ]
+    }
+   ],
    "source": [
-    "# Your code here"
+    "# Your code here\n",
+    "lista = ['I', ['r', 'o', 'n', 'h', ' a', 'c', 'k']]\n",
+    "tup = [lista[0]] + lista[1]\n",
+    "print (tup)"
    ]
   },
   {
@@ -102,11 +154,26 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 45,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['I', 'r', 'o', 'n']\n",
+      "['h', ' a', 'c', 'k']\n"
+     ]
+    }
+   ],
    "source": [
-    "# Your code here"
+    "# Your code here\n",
+    "tup1 = tup[:4]\n",
+    "print(tup1)\n",
+    "\n",
+    "tup2 = tup[-4:]\n",
+    "print(tup2)\n",
+    "\n"
    ]
   },
   {
@@ -120,11 +187,21 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 46,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "['I', 'r', 'o', 'n', 'h', ' a', 'c', 'k']\n"
+     ]
+    }
+   ],
    "source": [
-    "# Your code here"
+    "# Your code here\n",
+    "tup3 = tup1 + tup2\n",
+    "print(tup3)\n"
    ]
   },
   {
@@ -140,7 +217,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Your code here"
+    "# Your code here\n"
    ]
   },
   {
@@ -602,7 +679,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "base",
    "language": "python",
    "name": "python3"
   },
@@ -616,12 +693,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
-  },
-  "vscode": {
-   "interpreter": {
-    "hash": "aee8b7b246df8f9039afb4144a1f6fd8d2ca17a180786b69acc140d282b71a49"
-   }
+   "version": "3.13.5"
   }
  },
  "nbformat": 4,