probability

Posted by lovekesh on May 08, 2012; 9:35pm
URL: http://discussion-forum.276.s1.nabble.com/probability-tp7540764.html

P1, P2, . . . , P8 are eight players participating in a tournament. If i < j, then Pi will win
the match against Pj. Players are paired up randomly for first round and winners of
this round again paired up for the second round and so on. Find the probability that P4
reaches in the final. How to get the answer???
Guys, answer is coming 4/35.