Question 1183758
There are 14 pills and 14C5 ways to choose or 2002 ways.
5 ways to choose 4 pills and the last pill is always good, so 5/2002=0.00250 probability.
5C4*1/14C5

also, (10/14) ways for the first (4/13)(3/12)(2/11)(1/10) for the rest, and 5 ways that can happen with same numerator/denominator, each =240/240240,  and that is the same probability.