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A die is thrown thrice. A success is ...

A die is thrown thrice. A success is or 6 in a throw. Find the mean and variance of the number 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

Text Solution

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The correct Answer is:
A
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