Question: A coin is tossed four times.
(a) Make a list of all the possible outcomes. For example, the sequence HHTH, representing head, head, tail, head, is one possibility. How many possibilities are there altogether?
(b) In how many ways can you get exactly one head?
(c) In how many ways can you get exactly two heads?
(d) In how many ways can you get exactly three heads?
(e) In how many ways can you get at least one head?