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The probability distribution of the rand...

The probability distribution of the random variables X is given by
`{:(X,1,2,3,4),(P(X=x),1//8,1//2,1//8,1//4):}`
Then the value of V(X) is equal to

A

0

B

1

C

`(1)/(2)`

D

`(2)/(3)`

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The correct Answer is:
B
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