A dice is thrown repeatedly. If `5` or `6` appears, person wint Rs. 100 otherwise he loses Rs. 50. he does it until he wins Rs. 100 or he tosses maximum for 3 times. Then find te expected gain (A) `400/3` gain (B) `400/9` gain (C) `0` (D) `400/3` loss

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

Two fair dice are thrown simultaneously.If both die show the same number,then the person wins Rs 15. if the sum of number is 9 , he wins Rs 12. In all other cases,he loses Rs.6 Then the expectation is

A boy tosses faiir coin 3 times. If he gets Rs 2X for X heads, then his expected gain equals to Rs…..

A shopkeeper loses 16% when he sells an article for Rs 2,730. If he sells it for Rs. 3,458, his loss/gain percentage is

A players tosses 2 fair coins. He wins Rs. 5 if 2 heads appear, Rs. 2 if 1 head appear and Rs. 1 if no head appears. Then his expected wining amount is

A man has a number of oranges.If he sells them at Rs.1.25 per 20 oranges,he loses rs.2.50 .if he sells them at Rs.1.50 per 20 oranges,he gains rs.5. What is the number of oranges?

A fair coin is tosed 3 times. A person receives "Rs. "X^(2) if he gets X number of heads in all. His expected gain is