Re: Simple probability questions

Posted by jack on Mar 25, 2014; 5:26pm
URL: http://discussion-forum.276.s1.nabble.com/Simple-probability-questions-tp7585428p7585517.html

case 1: A in 1st n B in 5th position
case 2: A in second n B in 6th
.
.
.
.
case 6:A in 6th and B in 10th

Further, A and B can interchange their position in 2!
and remaining 8 men can occupy any 8 seats in 8!
so favourable no of case 6*2!*8!

exhaustive no. of case 10!
therefore required probabilty=(6*2!*8!)/10!
ans: 2/15