CUET Preparation Today
CUET
-- Mathematics - Section B2
Index Numbers and Time Based Data
If X has a Poisson distribution such that 3 P(X = 2) = P(X = 4), then P(X = 1) is:
$6 e^{-6}$
$3 e^{-2}$
$6 e^6$
$e^{-1}$
The correct answer is Option (1) → $6 e^{-6}$