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Question

If a random variable X assume values x1, x2, x3, …, xn with the corresponding probabilities p1, p2, p3, …, pn. Then


A

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B

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C

P1 = P2 = P3 =…..= Pn

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D

P1 + P2 + P3 +…..+ Pn = 1

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Solution

The correct option is D

P1 + P2 + P3 +…..+ Pn = 1


The sum of all the probabilities of all the events of an experiment is 1. If a random variable X assume values x1, x2, x3, …, xn with the corresponding probabilities p1, p2, p3, …, pn. Then P1 + P2 + P3 +…..+ Pn = 1


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