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Discussion :: Probability

  1. The probability that A speaks truth is 3/5 and that of B speaking truth is 4/7. What is the probability that they agree in stating the same fact?
    2. A.
    18/35
    B.
    12/35
    C.
    17/35
    D.
    19/35
    E.
    None of these

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    Answer : Option A

    Explanation :

    If both agree stating the same fact, either both of them speak truth of both speak false.

    Probability = 3/5 * 4/7 + 2/5 * 3/7

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