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.

In a game,a man wins rupees five for a six and loses rupee one 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.

In a game,a man wins Rs.5 for getting a number greater than 4 and loses Rs.1 otherwise,when a fair die is thrown.The man decided to throw a die thrice but to quit as and when he gets a number greater than 4.Find the expected value of the amount he win/loses.

In a game, a man wins Rs 100 if he gets 5 or 6 on a throw of a fair die and loses Rs 50 for getting any other number on the die. If he decides to throw the die either till he gets a five or a six or to a maximum of three throws, then his expected gain/loss (in rupees) is: (a) 400/3 gain (b) 400/9 loss (c) 0 (d) 400/3 loss

A man wins a rupee for head and loses a rupee for tai when coin is tossed.Suppose that he tosses once and quits if he wins but xx once more if he loses on the first toss.Find the probability distribution of the number of rupees the man wins.

Three persons A,B,C throw a die in succession till one gets a six and wins the game.Find their respective probabilities of wining ,if A begins.

A man throws a die until he gets a number greater than 3 . The probability that he gets 5 in the last throw