Question 926313
A club has 50 members
....

 a) How many ways are there to choose four members of the club to serve on an executive committee:
 50C4 = {{{(50*49*48*47)/(4*3*2*1)}}} 230,300
......
b) How many ways are there to choose a president, vice president, secretary, and treasurer of the club, 
where no person can hold more than one office?  50P4 = {{{50*49*48*47}}} = 5,527,200