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Four persons are asked the same question by an interviewer. If each has, independently, a probability 1/6 of answering correctly, then the probability that at least one of them answers correctly is
  • a)
  • b)
    2/3
  • c)
    1/36
  • d)
    none of these
Correct answer is option 'D'. Can you explain this answer?
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Four persons are asked the same question by an interviewer. If each ha...
Let  denote the event that the ith person answers the question correctly.
P(at least one of them answers correctly)
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Four persons are asked the same question by an interviewer. If each has, independently, a probability 1/6 of answering correctly, then the probability that at least one of them answers correctly isa)b)2/3c)1/36d)none of theseCorrect answer is option 'D'. Can you explain this answer?
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