Syntax of tuples
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-  Write a sentence or a piece of code to assign to the variable t
   the following value:

#. a tuple with 3 elements: True, 3.14 and 'Hello'
#. the empty tuple ()
#. a tuple with a single element, integer 3
#. a tuple formed with the list of the 100 integers from  0 to 99, the boolean
   False, all the lowercase letters of the alphabet.

-  Le's variable t be a tuple with value (2, 3, 4, 5). Write a sentence
   or a piece of code to modify its value so that, after the execution,
   it will contain the following value:

#. (2, 3, 4)
#. (2, 3, 4, 5, 6, 7)
#. (2, 3, 4, 5, (2, 3, 4, 5))
#. ((2, 3, 4, 5), (2, 3, 4, 5))
#. ((2, 3), (4, 5))

-  Write a sentence that converts a list into a tuple having the
   same elements.

-  Write a sentence that converts a tuple into a list having the
   same elements.

-  Write a sentence that from a tuple yields another tuple
   with equal contents except the last element.

-  Write a sentence that from a tuple yields another tuple
   with equal contents except the first element.

-  Write a sentence that from a string yields a tuple formed
   by each one of the characters of the string

-  Write a sentence that from a tuple such that all its elements are
   caràcters, obtains a string with the same elements of the tuple and
   in the same order.