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    Question

    A is trying to break a bulb by throwing balls at it. If

    he hits the bulb 5 times in every 15 throws and bulb breaks 5 times out of 20 hits, then find the probability of A breaking the bulb.
    A 1/10 Correct Answer Incorrect Answer
    B 1/14 Correct Answer Incorrect Answer
    C 1/12 Correct Answer Incorrect Answer
    D 1/11 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Probability of A hitting the bulb = 5/15 = 1/3 Probability of the bulb being broke on getting hit = 5/20 = 1/4 Probability of A breaking the bulb = (1/3) × (1/4) = 1/12

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