There are 4 people in a room, and we are curious whether two of
them have their birthday in the same month. We record the quadruple
that describes the month of birthday for each person. E.g. (Oct,
Jan, Jul, Apr) is one possible quadruple /outcome.(Since each month
applies to a specific person, (Oct, Jan, Jul, Apr) is not the same
as(Jan, Jul, Oct, Apr) and so order is important.)
a.How many possible outcomes are there?
b.In how many of these...