Patrick B. answered 10/05/19
Math and computer tutor/teacher
(a) There are 14*13*12*11 = 24024 way to select the officers...
(b) Since the officers can also serve on the committee, the sampling
is with replacement, so then there are (14 choose 3) ways to
select the committee members... 364 ways to be exact
(c) there are 3!=6 was to arrange the youngest members...
6/364 = 1.648...%