Re: PROBABILITY doubt

Posted by Amit Goyal on Dec 26, 2013; 4:58pm
URL: http://discussion-forum.276.s1.nabble.com/PROBABILITY-doubt-tp7584407p7584408.html

Pr(Winning for a person who buys 4 tickets)
=  1 - Pr(None of the 4 tickets he bought wins the prize)
= 1 - C(96, 3)/C(100, 3) = 1 -  (94 x 95 x 96)/(98 x 99 x 100) = 0.116