diff --git a/your-code/main.ipynb b/your-code/main.ipynb
index d584552..2bfb6f0 100644
--- a/your-code/main.ipynb
+++ b/your-code/main.ipynb
@@ -11,11 +11,11 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 4,
    "metadata": {},
    "outputs": [],
    "source": [
-    "import os"
+    "import os  # import os library"
    ]
   },
   {
@@ -27,11 +27,21 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 6,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50]\n"
+     ]
+    }
+   ],
    "source": [
-    "#your code here"
+    "consecutive_integers = [num for num in range(1, 51)] # Generate the list of consecutive integers from 1 to 50\n",
+    "\n",
+    "print(consecutive_integers)"
    ]
   },
   {
@@ -43,11 +53,21 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 10,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[2, 20, 22, 24, 26, 28]\n"
+     ]
+    }
+   ],
    "source": [
-    "#your code here"
+    "even_numbers = [num for num in range(1, 51) if num % 2 == 0 if str(num).startswith('2')] # Generate the list of consecutive integers from 1 to 50\n",
+    "\n",
+    "print(even_numbers)"
    ]
   },
   {
@@ -59,7 +79,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 16,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -77,11 +97,21 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 18,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[0.84062117, 0.48006452, 0.7876326, 0.77109654, 0.44409793, 0.09014516, 0.81835917, 0.87645456, 0.7066597, 0.09610873, 0.41247947, 0.57433389, 0.29960807, 0.42315023, 0.34452557, 0.4751035, 0.17003563, 0.46843998, 0.92796258, 0.69814654, 0.41290051, 0.19561071, 0.16284783, 0.97016248, 0.71725408, 0.87702738, 0.31244595, 0.76615487, 0.20754036, 0.57871812, 0.07214068, 0.40356048, 0.12149553, 0.53222417, 0.9976855, 0.12536346, 0.80930099, 0.50962849, 0.94555126, 0.33364763]\n"
+     ]
+    }
+   ],
    "source": [
-    "#your code here"
+    "new_list = [c for b in a for c in b]\n",
+    "\n",
+    "print(new_list)"
    ]
   },
   {
@@ -93,11 +123,25 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 30,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[0.84062117, 0.7876326, 0.77109654, 0.81835917, 0.87645456, 0.7066597, 0.57433389, 0.92796258, 0.69814654, 0.97016248, 0.71725408, 0.87702738, 0.76615487, 0.57871812, 0.53222417, 0.9976855, 0.80930099, 0.50962849, 0.94555126]\n",
+      "\n",
+      "19\n"
+     ]
+    }
+   ],
    "source": [
-    "#your code here"
+    "new_list = [c for b in a for c in b if c >= 0.5]\n",
+    "\n",
+    "print(new_list)\n",
+    "print()\n",
+    "print(len(new_list))"
    ]
   },
   {
@@ -109,7 +153,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 22,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -131,11 +175,25 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 32,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[0.55867166, 0.06210792, 0.08147297, 0.82579068, 0.91512478, 0.06833034, 0.05440634, 0.65857693, 0.30296619, 0.06769833, 0.96031863, 0.51293743, 0.09143215, 0.71893382, 0.45850679, 0.58256464, 0.59005654, 0.56266457, 0.71600294, 0.87392666, 0.11434044, 0.8694668, 0.65669313, 0.10708681, 0.07529684, 0.46470767, 0.47984544, 0.65368638, 0.14901286, 0.23760688]\n",
+      "\n",
+      "30\n"
+     ]
+    }
+   ],
    "source": [
-    "#your code here"
+    "new_list = [e for c in b for d in c for e in d]\n",
+    "\n",
+    "print(new_list)\n",
+    "print()\n",
+    "print(len(new_list))"
    ]
   },
   {
@@ -147,11 +205,25 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 34,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[0.08147297, 0.06833034, 0.30296619, 0.51293743, 0.45850679, 0.56266457, 0.11434044, 0.10708681, 0.47984544, 0.23760688]\n",
+      "\n",
+      "10\n"
+     ]
+    }
+   ],
    "source": [
-    "#your code here"
+    "new_list = [e for c in b for d in c for e in d if e == d[-1]]\n",
+    "\n",
+    "print(new_list)\n",
+    "print()\n",
+    "print(len(new_list))"
    ]
   },
   {
@@ -205,7 +277,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.12.7"
   },
   "vscode": {
    "interpreter": {
@@ -214,5 +286,5 @@
   }
  },
  "nbformat": 4,
- "nbformat_minor": 2
+ "nbformat_minor": 4
 }