1.  Make a string from the following list, with one one-line of Python code.

mylist = ['The' , 'weather' , 'is' , 'rainy' , 'today' , 'and' , 'cold' , 'only' , '22' , 'F.']


2.  Are tuples mutable objects? Can they be redefined?

3.  How do you define an empty dictionary?

4.  Write a dictionary representation of the following matrix.