JEE Main 2023 — Probability Question with Solution
From: JEE Main 2023 (Online) 25th January Evening Shift
Question
25% of the population are smokers. A smoker has 27 times more chances to develop lung cancer than a non smoker. A person is diagnosed with lung cancer and the probability that this person is a smoker is . Then the value of k is __________.
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Show full solutionCorrect answer: 9
Correct answer
9
Step-by-step explanation
Probability of a person being smoker
Probability of a person being non-smoker
Probability of a person being non-smoker
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This is a previous-year question from JEE Main 2023, 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.