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If X is a Poisson variable with P(X=0)=P...

If X is a Poisson variable with `P(X=0)=P(X=1)` then `P(X=2)=`

A

`e//2`

B

`e//6`

C

`1//6e`

D

`1//2e`

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The correct Answer is:
D
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