Problem Set 5 ^^^^^^^^^^^^^ .. admonition:: Problem 5.1 :class: Note Write a single-line command to print the first 4 characters of a string ``"Supercalifragilisticexpialidocious"``; next, print the 2nd to 7th characters; finally, print the last three characters. .. admonition:: Problem 5.2 :class: Note Write a function ``char_is_in(char,string)`` which returns ``True`` if the character ``char`` appears in the string ``string``. **HINT**: Use the ``in`` operator. .. admonition:: Problem 5.3 :class: Note Write a function ``where_is(char,string)`` which returns the *index* of the first occurence of ``char`` in ``string``. .. admonition:: Problem 5.4 :class: Note Write a function called max_of_all_lists_in_list(my_list) which returns the max value from ``my_list``; ``my_list`` is a list containing lists of integers. Use [[1,5,2,3,9],[5,2,12,3],[1,5,3]] as your argument (i.e. as your ``my_list`` parameter).