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A random variable has the following prob...

A random variable has the following probability distribution:
`X=x_i :\ \ 0 \ \ 1 \ \ 2 \ \ 3 \ \ 4 \ \ 5 \ \ 6 \ \ 7`
`P(X=x_i):0 \ \ 2p \ \ 2 p\ \ 3p\ \ p^2\ \ 2p^2 \ \ 7p^2 \ \ 2p`
The value of `p` is
a. `1/10`
b. `-1`
c. `-1/10`
d. `1/5`

A

`1//10`

B

`-1`

C

`-1//10`

D

none of these

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The correct Answer is:
A
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