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

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

A tosses an unbiased coin 3 times. If he gets a head all the 3 times he is to get a prize of Rs.160/- along with his entry fee of Rs.16/- otherwise he loses his entry fee. The mathematical expectation of his profit is

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

A coin is tossed four times,then the expected value of the number of heads 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 player 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 variance of his winning amount is

A player tosses 3 fair coins and wins Rs. 8 if three heads occur, Rs. 3 if 2 heads occur and Rs. 1 if one head occurs. If the game as to be fair (i.e., expected value is zero) how must should he lose, if no head occur ?

A player tosses 3 fair coins and wins Rs. 8 if three heads occur, Rs. 3 if 2 heads occur and Rs. 1 if one head occurs. If the game as to be fair (i.e., expected value is zero) how must should he lose, if no head occur ?

If I toss a coin 3 times and get head and get head each time, should I expect a tail to have a higher chance in the 4th toss? Give a reason in support of your answer.