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A random variable X has its range {0,1,2...

A random variable X has its range {0,1,2,3,………}. If `P(X=r)=(c(r+1))/(2^(r))` for r=0,1,2,……….. Then c=

A

2

B

`1//2`

C

4

D

`1//4`

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The correct Answer is:
D
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DIPTI PUBLICATION ( AP EAMET)-THEORETICAL DISTRIBUTIONS-EXERCISE 1 (CHOOSE THE CORRECT ANSWER FROM THE ALTERNATIVE 1,2,3 OR 4 GIVEN )
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