A candidate is selected for interview for three posts. For the first post there are 3 candidates, for the second 4 candidates and for the third 2 candidates. What is the probability that the candidate is selected for at least one post?
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Probability and Bayes' theorem has come up 190 times in 7 exams since 2004.
This question is on Addition rule, complements and inclusion-exclusion, part of Probability and Bayes' theorem in Statistics.
The probability of at least one of several events, and of none.
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Question from the UGC-NET 2025 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.