JEE Main 2022 — Probability Question with Solution
From: JEE Main 2022 (Online) 27th June Morning Shift
Question
Let X be a random variable having binomial distribution B(7, p). If P(X = 3) = 5P(x = 4), then the sum of the mean and the variance of X is :
Choose an option
Show full solutionCorrect option: C
Correct answer
C
Step-by-step explanation
Given P(X = 3) = 5P(X = 4) and n = 7
and also
and
Mean and variance
Mean + Variance
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This is a previous-year question from JEE Main 2022, covering the Probability chapter of Mathematics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.