diff --git a/main.ipynb b/main.ipynb
index b05630a..d1fbb29 100644
--- a/main.ipynb
+++ b/main.ipynb
@@ -20,7 +20,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 5,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -37,19 +37,38 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 2,
    "metadata": {},
    "outputs": [],
    "source": [
     "def greater(a,b):\n",
+    "    if a > b:\n",
+    "        return  a #(f\"{a} is greater than {b}\")\n",
+    "    elif a < b:\n",
+    "        return b #(f\"{b} is greater than {a}\")\n",
+    "    else:\n",
+    "        return a # (\"They are both equal\")\n",
+    "\n",
     "#your code here"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 3,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "....................................................................................................\n",
+      "----------------------------------------------------------------------\n",
+      "Ran 100 tests in 0.110s\n",
+      "\n",
+      "OK\n"
+     ]
+    }
+   ],
    "source": [
     "# This will test your function \n",
     "test_greater(greater)"
@@ -57,11 +76,22 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 5,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "5"
+      ]
+     },
+     "execution_count": 5,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
-    "#your code here"
+    "greater (5,5)"
    ]
   },
   {
@@ -73,18 +103,39 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 12,
    "metadata": {},
    "outputs": [],
    "source": [
-    "#your code here"
+    "#your code here\n",
+    "def greatest(lst):\n",
+    "    if not lst:\n",
+    "        raise error(\"list can not be empty\")\n",
+    "    x = lst[0]\n",
+    "    for i in lst:\n",
+    "        if i > x:\n",
+    "            x = i\n",
+    "    return x\n",
+    "\n"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 13,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "....................................................................................................\n",
+      "----------------------------------------------------------------------\n",
+      "Ran 100 tests in 0.095s\n",
+      "\n",
+      "OK\n"
+     ]
+    }
+   ],
    "source": [
     "# This will test your function \n",
     "test_greatest(greatest)"
@@ -99,21 +150,39 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 14,
    "metadata": {},
    "outputs": [],
    "source": [
     "def sum_all(lst):\n",
-    "#your code here"
+    "    x = 0\n",
+    "    for i in lst:\n",
+    "        x += i\n",
+    "\n",
+    "    return x\n",
+    "\n",
+    "     "
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 15,
    "metadata": {
     "scrolled": true
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "....................................................................................................\n",
+      "----------------------------------------------------------------------\n",
+      "Ran 100 tests in 0.109s\n",
+      "\n",
+      "OK\n"
+     ]
+    }
+   ],
    "source": [
     "# This will test your function \n",
     "test_sum(sum_all)"
@@ -128,21 +197,39 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 16,
    "metadata": {},
    "outputs": [],
    "source": [
     "def mult_all(lst):\n",
-    "#your code here"
+    "    for i in range(0, len(lst)):\n",
+    "        if i > 0:\n",
+    "            previous_number =  previous_number * lst[i]\n",
+    "        else:\n",
+    "            previous_number = lst[i]\n",
+    "\n",
+    "    return previous_number\n"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 17,
    "metadata": {
     "scrolled": true
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "....................................................................................................\n",
+      "----------------------------------------------------------------------\n",
+      "Ran 100 tests in 0.098s\n",
+      "\n",
+      "OK\n"
+     ]
+    }
+   ],
    "source": [
     "# This will test your function \n",
     "test_mult(mult_all)"
@@ -157,19 +244,46 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 18,
    "metadata": {},
    "outputs": [],
    "source": [
     "def oper_all(arr, oper = \"*\"):\n",
+    "    if oper == \"+\":\n",
+    "        for i in range(0, len(arr)):\n",
+    "            if i > 0:\n",
+    "                previous_number =  previous_number + arr[i]\n",
+    "            else:\n",
+    "                previous_number = arr[i]\n",
+    "    elif oper == \"*\":\n",
+    "        for i in range(0, len(arr)):\n",
+    "            if i > 0:\n",
+    "                previous_number =  previous_number * arr[i]\n",
+    "            else:\n",
+    "                previous_number = arr[i]\n",
+    "\n",
+    "    return previous_number\n",
+    "\n",
     "#your code here"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 19,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "....................................................................................................\n",
+      "----------------------------------------------------------------------\n",
+      "Ran 100 tests in 0.098s\n",
+      "\n",
+      "OK\n"
+     ]
+    }
+   ],
    "source": [
     "# This will test your function \n",
     "test_operations(oper_all)"
@@ -184,11 +298,15 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 24,
    "metadata": {},
    "outputs": [],
    "source": [
     "def factorial(n):\n",
+    "    x = 1\n",
+    "    for i in range(1, n + 1):\n",
+    "        x *= i\n",
+    "    return x\n",
     "#your code here"
    ]
   },
@@ -213,9 +331,21 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 25,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "....................................................................................................\n",
+      "----------------------------------------------------------------------\n",
+      "Ran 100 tests in 0.101s\n",
+      "\n",
+      "OK\n"
+     ]
+    }
+   ],
    "source": [
     "# This will test your function \n",
     "test_factorial(factorial)"
@@ -232,19 +362,41 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 34,
    "metadata": {},
    "outputs": [],
    "source": [
     "def unique(lst_un):\n",
+    "    values = []\n",
+    "    unique_values = []\n",
+    "    for i in lst_un:\n",
+    "        if i not in values:\n",
+    "            values.append(i)\n",
+    "            unique_values.append(i)      \n",
+    "    return unique_values\n",
+    "        \n",
+    "\n",
+    "    \n",
     "#your code here"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 35,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "....................................................................................................\n",
+      "----------------------------------------------------------------------\n",
+      "Ran 100 tests in 0.242s\n",
+      "\n",
+      "OK\n"
+     ]
+    }
+   ],
    "source": [
     "# This will test your function \n",
     "test_unique(unique)"
@@ -260,19 +412,45 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 36,
    "metadata": {},
    "outputs": [],
    "source": [
     "def mode_counter(arr):\n",
+    "    numbers = {}\n",
+    "    values = 0\n",
+    "    keys = 0\n",
+    "    for i in arr:\n",
+    "        if i in numbers:\n",
+    "            numbers[i] += 1\n",
+    "        else:\n",
+    "            numbers[i] = 1\n",
+    "    for key,value in numbers.items():\n",
+    "        if value > values:\n",
+    "            values = value\n",
+    "            keys = key\n",
+    "    return keys\n",
+    "\n",
     "#your code here"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 37,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "....................................................................................................\n",
+      "----------------------------------------------------------------------\n",
+      "Ran 100 tests in 0.104s\n",
+      "\n",
+      "OK\n"
+     ]
+    }
+   ],
    "source": [
     "# This will test your function \n",
     "test_mode(mode_counter)"
@@ -288,19 +466,42 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 50,
    "metadata": {},
    "outputs": [],
    "source": [
     "def st_dev(list_sd):\n",
+    "    sum_numbers = 0\n",
+    "    sqrd = 0\n",
+    "    for i in list_sd:\n",
+    "        sum_numbers += i\n",
+    "    med = sum_numbers / len(list_sd)\n",
+    "    for i in list_sd:\n",
+    "        sqrd += (i - med) ** 2\n",
+    "    var = sqrd / (len(list_sd) -1)\n",
+    "    dev = var ** 0.5\n",
+    "    return dev\n",
+    "\n",
     "#your code here"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 51,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "....................................................................................................\n",
+      "----------------------------------------------------------------------\n",
+      "Ran 100 tests in 0.059s\n",
+      "\n",
+      "OK\n"
+     ]
+    }
+   ],
    "source": [
     "# This will test your function \n",
     "test_stdev(st_dev)"
@@ -315,19 +516,39 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 54,
    "metadata": {},
    "outputs": [],
    "source": [
     "def pangram(string):\n",
+    "    string = string.lower()\n",
+    "    alphabet = ['q','w','e','r','t','y','u','i','o','p','a','s','d','f','g','h','j','k','l','z','x','c','v','b','n','m']\n",
+    "    for i in alphabet:\n",
+    "        if i not in string:\n",
+    "            return False\n",
+    "    return True\n",
+    "\n",
+    "\n",
     "#your code here"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 55,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "..............................\n",
+      "----------------------------------------------------------------------\n",
+      "Ran 30 tests in 0.014s\n",
+      "\n",
+      "OK\n"
+     ]
+    }
+   ],
    "source": [
     "# This will test your function \n",
     "test_pangram(pangram)"
@@ -344,19 +565,52 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 58,
    "metadata": {},
    "outputs": [],
    "source": [
     "def sort_alpha(string):\n",
+    "    words = []\n",
+    "    sliced_word = \"\"\n",
+    "    for i in string:\n",
+    "        if i == ',':\n",
+    "            words.append(sliced_word)\n",
+    "            sliced_word = \"\"\n",
+    "        else:\n",
+    "            sliced_word += i\n",
+    "    words.append(sliced_word)\n",
+    "\n",
+    "    words.sort()\n",
+    "\n",
+    "    result = \"\"\n",
+    "    for i in range(len(words)):\n",
+    "        result += words[i]\n",
+    "        if i < len(words) - 1:  \n",
+    "            result += \",\"\n",
+    "\n",
+    "    return result\n",
+    "            \n",
+    "\n",
     "#your code here"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 59,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "....................................................................................................\n",
+      "----------------------------------------------------------------------\n",
+      "Ran 100 tests in 0.058s\n",
+      "\n",
+      "OK\n"
+     ]
+    }
+   ],
    "source": [
     "# This will test your function \n",
     "test_alpha(sort_alpha)"
@@ -371,19 +625,53 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 8,
    "metadata": {},
    "outputs": [],
    "source": [
     "def check_pass(password):\n",
+    "    if len(password) < 8:\n",
+    "        return False\n",
+    "    \n",
+    "    lower = False\n",
+    "    upper = False\n",
+    "    digit = False\n",
+    "    special = False\n",
+    "\n",
+    "    for i in password:\n",
+    "        if i.islower():\n",
+    "            lower = True\n",
+    "        elif i.isupper():\n",
+    "            upper = True\n",
+    "        elif i.isdigit():\n",
+    "            digit = True\n",
+    "        elif not i.isalnum():\n",
+    "            special = True\n",
+    "\n",
+    "    if lower == True and upper == True and digit == True and special == True:\n",
+    "        return True\n",
+    "    else:\n",
+    "        return False\n",
     "#your code here"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": null,
-   "metadata": {},
-   "outputs": [],
+   "execution_count": 9,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stderr",
+     "output_type": "stream",
+     "text": [
+      "....................................................................................................\n",
+      "----------------------------------------------------------------------\n",
+      "Ran 100 tests in 0.062s\n",
+      "\n",
+      "OK\n"
+     ]
+    }
+   ],
    "source": [
     "# This will test your function \n",
     "test_pass(check_pass)"
@@ -392,7 +680,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3 (ipykernel)",
+   "display_name": "base",
    "language": "python",
    "name": "python3"
   },
@@ -406,12 +694,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
-  },
-  "vscode": {
-   "interpreter": {
-    "hash": "aee8b7b246df8f9039afb4144a1f6fd8d2ca17a180786b69acc140d282b71a49"
-   }
+   "version": "3.12.7"
   }
  },
  "nbformat": 4,
diff --git a/mod/__pycache__/testing.cpython-312.pyc b/mod/__pycache__/testing.cpython-312.pyc
new file mode 100644
index 0000000..6ff3627
Binary files /dev/null and b/mod/__pycache__/testing.cpython-312.pyc differ