Home JEE Main - Previous Year Papers JEE MAIN 2021 PAPER- 4 In a group of 400 people, 160 are smokers an…
JEE Main - Previous Year Papers JEE MAIN 2021 PAPER- 4 Single Correct MCQ
Published on: August 14, 2026

In a group of 400 people, 160 are smokers and non-vegetarian; 100 are smokers and vegetarian and the remaining 140 are non-smokers and vegetarian. Their chances of getting a particular chest disorder are and respectively. A person is chosen from the group at random and is found to be suffering from the chest disorder. The probability that the selected person is a smoker and non-vegetarian is:

A
B
C
D

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The correct answer is:
D

Based on Baye's theorem

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