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In a game, a man wins a rupee for a six ...

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.

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MODERN PUBLICATION-PROBABILITY-EXERCISE
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  2. How many times must a man toss a fair coin so that the probability of ...

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  3. In a game, a man wins a rupee for a six and loses a rupee for any othe...

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  12. If A and B are two events such that P(A) ne 0 and P(B/A) = 1, then

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  13. If P(A/B) > P(A), then which of the following is correct : :

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  14. If A and B are any two events such that : P(A) + P(B) – P(A and B) = P...

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  15. A committee of 4 students is selected at random from a group consistin...

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  16. A bag contains 5 red marbles and 3 black marbles. Three marbles are dr...

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  17. A and B throw a pair of dice alternately. A wins the game if he gets a...

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  18. Four balls are to be drawn without replacement from a box containing 8...

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  19. Find the probability that in 10 throws of a fair die a score, which is...

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  20. If A and B are two events such that P(A) ne 0 and P(B/A) = 1, then

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