Errata variable

python/1_7_Variables.ipynb

@@ -141,8 +141,8 @@
    "source": [
     "Objects whose value can change are said to be **mutable**; objects whose value is unchangeable once they are created are called **immutable**.\n",
     "\n",
-    "* **Mutable types**: integers, floats, strings, tuples\n",
+    "* **Mutable types**: integers, floats, strings, lists, set\n",
-    "* **Inmutable types**: lists, dictionaries"
+    "* **Inmutable types**: tuples, ranges, dictionaries"
    ]
   },
   {
@@ -212,7 +212,7 @@
     "print('a', a)\n",
     "print('b', b)\n",
     "\n",
-    "# Which will be the value "
+    "# Which will be the value of a and b?"
    ]
   },
   {