Goofus and Gallant try out for the quiz team.Goofus, Gallant, and seven of their classmates are trying out forthe quiz bowl team. There are four positions available on theteam.
(a) If each position is different, how many ways are there thatthe team can be made?
(b) If each position is the same, how many ways are there that theteam can be made?
(c) Suppose each position is the same. How many teams include bothGoofus and Gallant?
(d) Suppose each position is the same. How many teams includeGoofus or Gallant? ("Or" means "at least one of.")