A club has 40 members. Three of the members are running for office and will be elected president, vice-president and secretary-treasurer based on the

total number of votes received. An advisory committee with 4 members will be  selected from the 37 members who are not running for office. ln how many ways  can  the club select its officers and advisory committee?

Solution In this problem, Task 1 is to rank the three candidates for office and Task 2 is select a committee of 4 from 37 members. The final answer is 3! C(37,4)

可是我怎么觉得第一个TASK是P(40,3)呢？！！求详细理解，谢谢乐于助人的同学们