JEE Main 2022 — Probability Question with Solution
From: JEE Main 2022 (Online) 28th July Evening Shift
Question
A bag contains 4 white and 6 black balls. Three balls are drawn at random from the bag. Let be the number of white balls, among the drawn balls. If is the variance of , then is equal to ________.
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Show full solutionCorrect answer: 56
Correct answer
56
Step-by-step explanation
Number of white ball drawn
and
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.