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If random variable X has the following probability distribution :

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If random variable X has the following probability distribution : A. 7 81 B. 5 81 C. 2 81 D. 1 81 Select the correct answer from above options

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Correct Answer - D ∴ 8 ∑ r=0 P(X=r)=1 ⇒a+3a+5a+7a+9a+11a+13a+15a+17a=1 ⇒a= 1 81

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