Probability is one of the most interesting topics in mathematics and is frequently tested in many aptitude tests.
Here is a challenging probability puzzle :)
In order to win a computer tournament, a player must win at least 20 games
before he loses 5.If at any stage he loses 5 games before winning 20, then he
has lost the tournament. Given that the probability of winning a game is 1/3 for
a player , what is the probability that he will win the tournament
