Q 1555601564.     Let `X` denote the sum of the numbers obtained

when two fair dice are rolled. The variance and

standard deviation of `X` are

VIT 2014
A

`(31)/6` and `sqrt(31/6)`

B

`(35)/6` and `sqrt(35/6)`

C

`(17)/6` and `sqrt(17/6)`

D

`(31)/6` and `sqrt(35/6)`

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