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If X is a poisson distribution such that...

If X is a poisson distribution such that P(X=1)=P(X=2)then,P(X=4)=

A

`(1)/(2e^(2))`

B

`(1)/(3e^(2))`

C

`(2)/(3e^(2))`

D

` (1)/(e^(2))`

Text Solution

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The correct Answer is:
C
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