A die is tossed thrice . A success I...

A die is tossed thrice . A success I is or 6 on a toss. Find the mean and variance of successes.

A

`mu =1, sigma^2=2//3`

B

`mu =2//3,sigma^2=1`

C

`mu=2,sigma^2=2//3`

D

None of these

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The correct Answer is:

A

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