If f(x)= k/(2^x) is a probability distri...

If `f(x)= k/(2^x)` is a probability distribution of a random variable X that can take on the values x=0,1,2,3,4. Then , k is equal to

A

`16/15`

B

`15/16`

C

`31/16`

D

None of these

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The correct Answer is:

D

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