CUET Preparation Today
CUET
-- Mathematics - Section B2
Probability Distributions
If X has a Poisson distribution such that $P(X=1)=4P(X=2),$ then $P(X=0)$ is :
$e^{-\frac{1}{2}}$
$e^{-1}$
$e^{-2}$
$e^{\frac{1}{2}}$
