ЁЯУв Too many exams? DonтАЩt know which one suits you best? Book Your Free Expert ЁЯСЙ call Now!

    Question

    Axe speaks truth only when Wye does not speak truth,

    then what is the probability that Zed does not speak truth on a question? There are three people тАУ Axe, Wye and Zed. Probability that Axe speaks the truth is 7/20, probability that Wye speaks the truth is 3/5 and probability that Zed speaks truth is 5/6. For a particular question asked, at most 2 people speak truth. All people answer to a particular question asked.
    A 53/600 Correct Answer Incorrect Answer
    B 47/800 Correct Answer Incorrect Answer
    C 16/95 Correct Answer Incorrect Answer
    D 43/800 Correct Answer Incorrect Answer
    E 55/728 Correct Answer Incorrect Answer

    Solution

    Case (1) : Wye does not speak truth┬а So, Axe speaks truth here Probability that Zed does not speaks truth = 7/20┬а ├Ч(1-3/5)├Ч(1-5/6) = 7/300 Case (2) : Wye speaks truth┬а So, Axe does not speaks truth here Probability that Zed does not speaks truth = (1-7/20)├Ч┬а 3/5┬а ├Ч(1-5/6) = 13/200 Required Probability = 7/300+┬а 13/200 = 53/600

    Practice Next
    More Probability Questions
    ask-question