Re: DSE 2011 QUES NO. 36

Posted by komal on Jun 17, 2012; 10:06am
URL: http://discussion-forum.276.s1.nabble.com/DSE-2011-QUES-NO-36-tp7577919p7577946.html

oops, i mistakenly took red ball selection for entrance, if selection of green ball is necessary for entry into the club then allocation should be 0 red ball and 1 green ball and rest in other box, so prob of selection of green ball = prob box I is selection * prob of green ball being selected given first box is chosen + prob second box is selected * prob of  green ball is selected when second box is selected = 1/2* 1 /1  +  1/2 * 49/99= .747