http://targetiit.com/iit_jee_forum/posts/plz_help_probablity_tomorrow_paper_3628.html
solved here by nishant bhaiyya
In a game, a man wins a rupee for a six and loses a rupee for any other number when a fair die is thrown.The man decided to throw a die thrice but to quit as and when he gets a six. Find the expected value of the amount he wins/loses.......
http://targetiit.com/iit_jee_forum/posts/plz_help_probablity_tomorrow_paper_3628.html
solved here by nishant bhaiyya