What are different ways of creating a tuple?

What values can we have in a tuple? Do they all have to be the same type*?

How do you create the following tuples?

(a) (4, 5, 6)

(b) (-2, 1, 3)

(c) (-9, -8, -7, -6, -5)

(d) (-9, -10, -11, -12)

(e) (0, 1, 2)

If a = (5, 4, 3, 2, 1, 0) evaluate the following expressions:

(a) a[0]

(b) a[1]

(c) a[a[0]]

(d) a[a[-1]]

(e) a[a[a[a[2]+1]]]