diff --git a/Desafio_01.ipynb b/Desafio_01.ipynb
index 49ee4db..0aa9fbe 100644
--- a/Desafio_01.ipynb
+++ b/Desafio_01.ipynb
@@ -18,7 +18,7 @@
       "name": "python",
       "nbconvert_exporter": "python",
       "pygments_lexer": "ipython3",
-      "version": "3.7.7"
+      "version": "3.7.9-final"
     },
     "colab": {
       "name": "Desafio 1.ipynb",
@@ -67,7 +67,7 @@
         "\n",
         "# Seu código"
       ],
-      "execution_count": 0,
+      "execution_count": 22,
       "outputs": []
     },
     {
@@ -78,10 +78,51 @@
         "colab": {}
       },
       "source": [
-        ""
+        "# import necessary libraries\n",
+        "import numpy as np\n",
+        "from operator import itemgetter\n",
+        "\n",
+        "# get unique values and its frequencies\n",
+        "words, frequencies = np.unique(palavras, return_counts=True)"
       ],
-      "execution_count": 0,
+      "execution_count": 23,
       "outputs": []
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 24,
+      "metadata": {},
+      "outputs": [],
+      "source": [
+        "# zip words and frequencies for iteration\n",
+        "stats = list(zip(words, frequencies))"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 25,
+      "metadata": {},
+      "outputs": [
+        {
+          "output_type": "stream",
+          "name": "stdout",
+          "text": [
+            "Word: black\tFrequency: 5\nWord: eyes\tFrequency: 1\nWord: green\tFrequency: 4\nWord: orange\tFrequency: 4\nWord: pink\tFrequency: 6\nWord: red\tFrequency: 4\nWord: white\tFrequency: 5\n"
+          ]
+        }
+      ],
+      "source": [
+        "# print the word and its frequency\n",
+        "for stat in stats:\n",
+        "    print(f'Word: {itemgetter(0)(stat)}\\tFrequency: {itemgetter(1)(stat)}')"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {},
+      "outputs": [],
+      "source": []
     }
   ]
-}
+}
\ No newline at end of file
diff --git a/Desafio_02.ipynb b/Desafio_02.ipynb
index ee7f64b..bc88704 100644
--- a/Desafio_02.ipynb
+++ b/Desafio_02.ipynb
@@ -18,7 +18,7 @@
       "name": "python",
       "nbconvert_exporter": "python",
       "pygments_lexer": "ipython3",
-      "version": "3.6.5"
+      "version": "3.7.9-final"
     },
     "colab": {
       "name": "Desafio 2.ipynb",
@@ -65,11 +65,79 @@
         "colab": {}
       },
       "source": [
-        "def convert_to_sec(number):\n",
-        "    pass # Seu código"
+        "def convert_to_sec(hours):\n",
+        "    '''Converts hours to seconds'''\n",
+        "    return hours * 60 * 60"
       ],
-      "execution_count": 0,
+      "execution_count": 1,
       "outputs": []
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 2,
+      "metadata": {},
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "18000"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 2
+        }
+      ],
+      "source": [
+        "convert_to_sec(5)"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 3,
+      "metadata": {},
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "10800"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 3
+        }
+      ],
+      "source": [
+        "convert_to_sec(3)"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 4,
+      "metadata": {},
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "7200"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 4
+        }
+      ],
+      "source": [
+        "convert_to_sec(2)"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {},
+      "outputs": [],
+      "source": []
     }
   ]
-}
+}
\ No newline at end of file
diff --git a/Desafio_03.ipynb b/Desafio_03.ipynb
index 1311cbd..53e484d 100644
--- a/Desafio_03.ipynb
+++ b/Desafio_03.ipynb
@@ -18,7 +18,7 @@
       "name": "python",
       "nbconvert_exporter": "python",
       "pygments_lexer": "ipython3",
-      "version": "3.6.5"
+      "version": "3.7.9-final"
     },
     "colab": {
       "name": "Desafio 3.ipynb",
@@ -61,7 +61,7 @@
         "\n",
         "# Seu código"
       ],
-      "execution_count": 0,
+      "execution_count": 3,
       "outputs": []
     },
     {
@@ -72,10 +72,41 @@
         "colab": {}
       },
       "source": [
-        ""
+        "# import necessary libraries\n",
+        "import numpy as np"
       ],
-      "execution_count": 0,
+      "execution_count": 4,
       "outputs": []
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 10,
+      "metadata": {},
+      "outputs": [],
+      "source": [
+        "# get unique values and sort the list\n",
+        "un_values = sorted(np.unique(lista))"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 11,
+      "metadata": {},
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "[1, 2, 3, 4, 5, 6, 9, 13, 15, 30, 45]"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 11
+        }
+      ],
+      "source": [
+        "un_values"
+      ]
     }
   ]
-}
+}
\ No newline at end of file
diff --git a/Desafio_04.ipynb b/Desafio_04.ipynb
index 089c3a8..b524c5e 100644
--- a/Desafio_04.ipynb
+++ b/Desafio_04.ipynb
@@ -18,7 +18,7 @@
       "name": "python",
       "nbconvert_exporter": "python",
       "pygments_lexer": "ipython3",
-      "version": "3.6.5"
+      "version": "3.7.9-final"
     },
     "colab": {
       "name": "Desafio 4.ipynb",
@@ -61,9 +61,13 @@
         "colab": {}
       },
       "source": [
-        "# Seu código"
+        "# Seu código\n",
+        "def reverse_text(phrase):\n",
+        "    '''Reverses the order of words in a string'''\n",
+        "    phrase = list(reversed(phrase.split(' ')))\n",
+        "    return ' '.join(phrase)\n"
       ],
-      "execution_count": 0,
+      "execution_count": 2,
       "outputs": []
     },
     {
@@ -74,10 +78,28 @@
         "colab": {}
       },
       "source": [
-        ""
+        "reverse_text('Python é legal')"
       ],
-      "execution_count": 0,
-      "outputs": []
+      "execution_count": 3,
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "'legal é Python'"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 3
+        }
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {},
+      "outputs": [],
+      "source": []
     }
   ]
-}
+}
\ No newline at end of file
diff --git a/Desafio_05.ipynb b/Desafio_05.ipynb
index 204b1df..e90fa76 100644
--- a/Desafio_05.ipynb
+++ b/Desafio_05.ipynb
@@ -10,7 +10,8 @@
     },
     "kernelspec": {
       "name": "python3",
-      "display_name": "Python 3"
+      "display_name": "Python 3",
+      "language": "python"
     }
   },
   "cells": [
@@ -68,7 +69,7 @@
         "'(255) 826-9050',\n",
         "]"
       ],
-      "execution_count": 0,
+      "execution_count": 16,
       "outputs": []
     },
     {
@@ -83,16 +84,53 @@
     },
     {
       "cell_type": "code",
-      "metadata": {
-        "id": "F8n1sN-4XrW3",
-        "colab_type": "code",
-        "colab": {}
-      },
+      "execution_count": 17,
+      "metadata": {},
+      "outputs": [],
       "source": [
-        ""
+        "def no_dups(numbers):\n",
+        "    '''Recursively removes duplicate elements of a list'''\n",
+        "    if numbers == []:\n",
+        "        return []\n",
+        "    else:\n",
+        "        head, *tail = numbers\n",
+        "        numbers = [head] + no_dups(list(filter(lambda x: x != head, tail)))\n",
+        "    return numbers"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 18,
+      "metadata": {},
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "['(765) 368-1506',\n",
+              " '(285) 608-2448',\n",
+              " '(255) 826-9050',\n",
+              " '(554) 994-1517',\n",
+              " '(596) 336-5508',\n",
+              " '(511) 821-7870',\n",
+              " '(410) 665-4447',\n",
+              " '(821) 642-8987',\n",
+              " '(311) 799-3883',\n",
+              " '(935) 875-2054',\n",
+              " '(464) 788-2397',\n",
+              " '(650) 684-1437',\n",
+              " '(812) 816-0881',\n",
+              " '(885) 407-1719',\n",
+              " '(943) 769-1061']"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 18
+        }
       ],
-      "execution_count": 0,
-      "outputs": []
+      "source": [
+        "no_dups(numeros_telefone)"
+      ]
     }
   ]
-}
+}
\ No newline at end of file
diff --git a/Desafio_06.ipynb b/Desafio_06.ipynb
index 4508023..3c71a6b 100644
--- a/Desafio_06.ipynb
+++ b/Desafio_06.ipynb
@@ -18,7 +18,7 @@
       "name": "python",
       "nbconvert_exporter": "python",
       "pygments_lexer": "ipython3",
-      "version": "3.6.5"
+      "version": "3.7.9-final"
     },
     "colab": {
       "name": "Desafio 6.ipynb",
@@ -63,9 +63,11 @@
         "colab": {}
       },
       "source": [
-        "# Seu código"
+        "# Seu código\n",
+        "def intersection(seq1, seq2):\n",
+        "    return list(set(seq1) & set(seq2))"
       ],
-      "execution_count": 0,
+      "execution_count": 12,
       "outputs": []
     },
     {
@@ -76,10 +78,32 @@
         "colab": {}
       },
       "source": [
-        ""
+        "a = [1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89]\n",
+        " \n",
+        "b = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13]"
       ],
-      "execution_count": 0,
+      "execution_count": 13,
       "outputs": []
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 14,
+      "metadata": {},
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "[1, 2, 3, 5, 8, 13]"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 14
+        }
+      ],
+      "source": [
+        "intersection(a, b)"
+      ]
     }
   ]
-}
+}
\ No newline at end of file
diff --git a/Desafio_07.ipynb b/Desafio_07.ipynb
index 5107d99..032909c 100644
--- a/Desafio_07.ipynb
+++ b/Desafio_07.ipynb
@@ -10,7 +10,8 @@
     },
     "kernelspec": {
       "name": "python3",
-      "display_name": "Python 3"
+      "display_name": "Python 3",
+      "language": "python"
     }
   },
   "cells": [
@@ -58,7 +59,7 @@
         "                    '(228) 976-9699', '(757) 450-9985', '(491) 666-5367',\n",
         "                    ]"
       ],
-      "execution_count": 0,
+      "execution_count": 1,
       "outputs": []
     },
     {
@@ -89,7 +90,7 @@
         "                     '(822) 640-8496', '(227) 389-3685', '(429) 264-7427', \n",
         "                     '(397) 845-8267']"
       ],
-      "execution_count": 0,
+      "execution_count": 2,
       "outputs": []
     },
     {
@@ -104,16 +105,95 @@
     },
     {
       "cell_type": "code",
-      "metadata": {
-        "id": "_OSrDQ1noh62",
-        "colab_type": "code",
-        "colab": {}
-      },
+      "execution_count": 3,
+      "metadata": {},
+      "outputs": [],
       "source": [
-        ""
+        "outsiders = [ph_num for ph_num in telefones_alunos if ph_num not in entraram_no_grupo]"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 4,
+      "metadata": {},
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "['(873) 810-8267',\n",
+              " '(300) 303-5462',\n",
+              " '(941) 225-3869',\n",
+              " '(294) 430-7720',\n",
+              " '(835) 955-1498',\n",
+              " '(897) 932-2512',\n",
+              " '(640) 427-2597',\n",
+              " '(856) 338-7094',\n",
+              " '(641) 367-5279',\n",
+              " '(964) 710-9625',\n",
+              " '(403) 343-7705',\n",
+              " '(797) 649-3653',\n",
+              " '(757) 450-9985',\n",
+              " '(491) 666-5367']"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 4
+        }
       ],
-      "execution_count": 0,
-      "outputs": []
+      "source": [
+        "outsiders"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 8,
+      "metadata": {},
+      "outputs": [],
+      "source": [
+        "# solution using sets\n",
+        "outsiders = set(telefones_alunos) - set(entraram_no_grupo)"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 9,
+      "metadata": {},
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "{'(294) 430-7720',\n",
+              " '(300) 303-5462',\n",
+              " '(403) 343-7705',\n",
+              " '(491) 666-5367',\n",
+              " '(640) 427-2597',\n",
+              " '(641) 367-5279',\n",
+              " '(757) 450-9985',\n",
+              " '(797) 649-3653',\n",
+              " '(835) 955-1498',\n",
+              " '(856) 338-7094',\n",
+              " '(873) 810-8267',\n",
+              " '(897) 932-2512',\n",
+              " '(941) 225-3869',\n",
+              " '(964) 710-9625'}"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 9
+        }
+      ],
+      "source": [
+        "outsiders"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {},
+      "outputs": [],
+      "source": []
     }
   ]
-}
+}
\ No newline at end of file
diff --git a/Desafio_08.ipynb b/Desafio_08.ipynb
index c6fed05..6187b89 100644
--- a/Desafio_08.ipynb
+++ b/Desafio_08.ipynb
@@ -18,7 +18,7 @@
       "name": "python",
       "nbconvert_exporter": "python",
       "pygments_lexer": "ipython3",
-      "version": "3.6.5"
+      "version": "3.7.9-final"
     },
     "colab": {
       "name": "Desafio 8.ipynb",
@@ -59,23 +59,112 @@
         "colab": {}
       },
       "source": [
-        "# Seu código"
+        "# import necessary libraries\n",
+        "import re"
       ],
-      "execution_count": 0,
+      "execution_count": 1,
       "outputs": []
     },
     {
       "cell_type": "code",
-      "metadata": {
-        "id": "ZYbqEWBG5nKx",
-        "colab_type": "code",
-        "colab": {}
-      },
+      "execution_count": 2,
+      "metadata": {},
+      "outputs": [],
+      "source": [
+        "def get_words(text):\n",
+        "    '''Returns the 10 longest words of a given list'''\n",
+        "    words = []\n",
+        "    # read file and split into words by ' '\n",
+        "    with open(text, 'r') as f:\n",
+        "        words = f.read().split()\n",
+        "    # clean punctuation\n",
+        "    cl_words = []\n",
+        "    for word in words:\n",
+        "        cl_words.append(re.sub(r'[^\\w\\s]','',word))\n",
+        "    # sort words by length - reversed\n",
+        "    cl_words = sorted(cl_words, key=len, reverse=True)\n",
+        "    \n",
+        "    # check if there are at least 10 words in the list\n",
+        "    if len(cl_words) > 10:\n",
+        "        return cl_words[0:10]\n",
+        "\n",
+        "    return cl_words"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 3,
+      "metadata": {},
+      "outputs": [],
       "source": [
-        ""
+        " words = get_words('texto.txt')"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 4,
+      "metadata": {},
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "['generalpurpose',\n",
+              " 'objectoriented',\n",
+              " 'comprehensive',\n",
+              " 'intermediate',\n",
+              " 'interpreted',\n",
+              " 'programming',\n",
+              " 'languageIts',\n",
+              " 'readability',\n",
+              " 'programmers',\n",
+              " 'programming']"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 4
+        }
       ],
-      "execution_count": 0,
-      "outputs": []
+      "source": [
+        "words"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 5,
+      "metadata": {},
+      "outputs": [],
+      "source": [
+        "def print_ranking(words):\n",
+        "    print(f'Ranking\\tWord')\n",
+        "    for idx, word in enumerate(words):\n",
+        "        print(f'{idx + 1:>7}\\t{word}')\n",
+        "        "
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 6,
+      "metadata": {},
+      "outputs": [
+        {
+          "output_type": "stream",
+          "name": "stdout",
+          "text": [
+            "Ranking\tWord\n      1\tgeneralpurpose\n      2\tobjectoriented\n      3\tcomprehensive\n      4\tintermediate\n      5\tinterpreted\n      6\tprogramming\n      7\tlanguageIts\n      8\treadability\n      9\tprogrammers\n     10\tprogramming\n"
+          ]
+        }
+      ],
+      "source": [
+        "print_ranking(words)"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {},
+      "outputs": [],
+      "source": []
     }
   ]
-}
+}
\ No newline at end of file
diff --git a/Desafio_09.ipynb b/Desafio_09.ipynb
index 1426b31..10ba6e8 100644
--- a/Desafio_09.ipynb
+++ b/Desafio_09.ipynb
@@ -18,7 +18,7 @@
       "name": "python",
       "nbconvert_exporter": "python",
       "pygments_lexer": "ipython3",
-      "version": "3.6.5"
+      "version": "3.7.9-final"
     },
     "colab": {
       "name": "Desafio 9.ipynb",
@@ -57,9 +57,14 @@
         "colab": {}
       },
       "source": [
-        "# Seu código"
+        "def sum_multiples_of(n, m, limit):\n",
+        "    '''Returns the num set by limit of multiples of n and m'''\n",
+        "    if n == 0 or m == 0:\n",
+        "        raise Exception(\"Can't divide by zero.\")\n",
+        "    nums = [x for x in range(1, limit + 1)]\n",
+        "    return sum([y for y in nums if y % n == 0 or y % m == 0])"
       ],
-      "execution_count": 0,
+      "execution_count": 22,
       "outputs": []
     },
     {
@@ -70,10 +75,57 @@
         "colab": {}
       },
       "source": [
-        ""
+        "nums = [n for n in range(1, 21)]"
       ],
-      "execution_count": 0,
+      "execution_count": 23,
       "outputs": []
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 24,
+      "metadata": {},
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 24
+        }
+      ],
+      "source": [
+        "nums"
+      ]
+    },
+    {
+      "source": [
+        "sum_multiples_of(3, 5, 20)"
+      ],
+      "cell_type": "code",
+      "metadata": {},
+      "execution_count": 26,
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "98"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 26
+        }
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {},
+      "outputs": [],
+      "source": []
     }
   ]
-}
+}
\ No newline at end of file
diff --git a/Desafio_10.ipynb b/Desafio_10.ipynb
index 0ed40b5..7057972 100644
--- a/Desafio_10.ipynb
+++ b/Desafio_10.ipynb
@@ -18,7 +18,7 @@
       "name": "python",
       "nbconvert_exporter": "python",
       "pygments_lexer": "ipython3",
-      "version": "3.6.5"
+      "version": "3.7.9-final"
     },
     "colab": {
       "name": "Desafio 10.ipynb",
@@ -67,9 +67,9 @@
         "colab": {}
       },
       "source": [
-        "# Seu código"
+        "sampleList = [11, 45, 8, 23, 14, 12, 78, 45, 89]"
       ],
-      "execution_count": 0,
+      "execution_count": 11,
       "outputs": []
     },
     {
@@ -80,10 +80,48 @@
         "colab": {}
       },
       "source": [
-        ""
+        "import numpy as np \n"
       ],
-      "execution_count": 0,
+      "execution_count": 12,
       "outputs": []
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 13,
+      "metadata": {},
+      "outputs": [],
+      "source": [
+        "def chunk_reverse(lst, chunk):\n",
+        "    return list(map(lambda ls: list(reversed(ls)), np.array_split(lst, chunk)))\n",
+        "\n"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 14,
+      "metadata": {},
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "[[8, 45, 11], [12, 14, 23], [89, 45, 78]]"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 14
+        }
+      ],
+      "source": [
+        "chunk_reverse(sampleList, 3)"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {},
+      "outputs": [],
+      "source": []
     }
   ]
 }
\ No newline at end of file
diff --git a/Desafio_11.ipynb b/Desafio_11.ipynb
index aa23e34..93d1762 100644
--- a/Desafio_11.ipynb
+++ b/Desafio_11.ipynb
@@ -18,7 +18,7 @@
       "name": "python",
       "nbconvert_exporter": "python",
       "pygments_lexer": "ipython3",
-      "version": "3.6.5"
+      "version": "3.7.9-final"
     },
     "colab": {
       "name": "Desafio 11.ipynb",
@@ -61,10 +61,22 @@
       },
       "source": [
         "# Seu código\n",
+        "\n",
+        "def is_odd(n):\n",
+        "    return n % 2 == 1\n",
+        "\n",
         "def contar_pares_impares(entrada):\n",
-        "    pass"
+        "    '''Counts the number of evens and odds'''\n",
+        "    odd_counter = 0\n",
+        "    even_counter = 0\n",
+        "    for n in entrada:\n",
+        "        if is_odd(n):\n",
+        "            odd_counter += 1\n",
+        "        else:\n",
+        "            even_counter += 1\n",
+        "    return (even_counter, odd_counter)"
       ],
-      "execution_count": 0,
+      "execution_count": 35,
       "outputs": []
     },
     {
@@ -75,10 +87,21 @@
         "colab": {}
       },
       "source": [
-        ""
+        "contar_pares_impares([6, 2, 7, -5, 8, -4])"
       ],
-      "execution_count": 0,
-      "outputs": []
+      "execution_count": 36,
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "(4, 2)"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 36
+        }
+      ]
     },
     {
       "cell_type": "code",
@@ -87,9 +110,7 @@
         "colab_type": "code",
         "colab": {}
       },
-      "source": [
-        ""
-      ],
+      "source": [],
       "execution_count": 0,
       "outputs": []
     },
@@ -115,7 +136,7 @@
         "\n",
         "# Se nenhuma mensagem for impressa abaixo, significa que a função está implementada corretamente"
       ],
-      "execution_count": 0,
+      "execution_count": 37,
       "outputs": []
     },
     {
@@ -125,9 +146,7 @@
         "colab_type": "code",
         "colab": {}
       },
-      "source": [
-        ""
-      ],
+      "source": [],
       "execution_count": 0,
       "outputs": []
     },
@@ -138,9 +157,7 @@
         "colab_type": "code",
         "colab": {}
       },
-      "source": [
-        ""
-      ],
+      "source": [],
       "execution_count": 0,
       "outputs": []
     }
diff --git a/Desafio_12.ipynb b/Desafio_12.ipynb
index 0ebd52a..14ab755 100644
--- a/Desafio_12.ipynb
+++ b/Desafio_12.ipynb
@@ -18,7 +18,7 @@
       "name": "python",
       "nbconvert_exporter": "python",
       "pygments_lexer": "ipython3",
-      "version": "3.6.5"
+      "version": "3.7.9-final"
     },
     "colab": {
       "name": "Desafio 12.ipynb",
@@ -74,23 +74,81 @@
         "colab": {}
       },
       "source": [
-        "# Seu código"
+        "def password_check(pwd):\n",
+        "    '''Checks for password validity'''\n",
+        "    if 6 <= len(pwd) <= 16:\n",
+        "        if (at_least_one(is_digit, pwd) and \n",
+        "                at_least_one(is_letter, pwd) and \n",
+        "                    at_least_one(is_spec_chars, pwd)):\n",
+        "            return f'{pwd} - Valid Password.'\n",
+        "    else:\n",
+        "        return f'{pwd} - Invalid Password.'\n",
+        "\n",
+        "# helper functions\n",
+        "def is_letter(c):\n",
+        "    return c.isalpha()\n",
+        "\n",
+        "def is_digit(n):\n",
+        "    return n.isdigit()\n",
+        "\n",
+        "def is_spec_chars(c):\n",
+        "    spec_chars = ['$', '#', '@']\n",
+        "    return c in spec_chars\n",
+        "\n",
+        "def at_least_one(f, lst):\n",
+        "    return any(list(map(f, lst)))\n",
+        "\n",
+        "    "
       ],
-      "execution_count": 0,
+      "execution_count": 80,
       "outputs": []
     },
     {
       "cell_type": "code",
-      "metadata": {
-        "id": "n8F01NzD9uHm",
-        "colab_type": "code",
-        "colab": {}
-      },
+      "execution_count": 81,
+      "metadata": {},
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "'1234 - Invalid Password.'"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 81
+        }
+      ],
       "source": [
-        ""
+        "password_check('1234')"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": 82,
+      "metadata": {},
+      "outputs": [
+        {
+          "output_type": "execute_result",
+          "data": {
+            "text/plain": [
+              "'Qw#1234 - Valid Password.'"
+            ]
+          },
+          "metadata": {},
+          "execution_count": 82
+        }
       ],
-      "execution_count": 0,
-      "outputs": []
+      "source": [
+        "password_check('Qw#1234')"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {},
+      "outputs": [],
+      "source": []
     }
   ]
 }
\ No newline at end of file