The undergraduate statistics club at a certain university has 24 members.
a. All 24 members of the club are eligible to attend a conference next week, but they can only afford to send 4 people. In how many possible ways could 4 attendees be selected?
b. All club members are eligible for any of the four positions of president, VP, secretary, or treasurer. In how many possible ways can these positions be occupied?
c. Suppose it’s agreed that two people will be cochairs, one person secretary, and one person treasurer. How many ways are there to fill these positions now?