Theory of Expectation :: Problems on Stocks And Insurance : Probability Distribution

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It the probability that the value of a certain stock will remain the same is 0.46, the probabilities that its value will increase by Rs.0.50 or Rs.1.00 per share are respectively 0.17 and 0.23 and the probability that its value will decrease by Rs.0.25 per share is 0.14, what is the expected gain per share?

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