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    Question

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

    he hits the bulb 3 times in every 10 throws and bulb breaks 3 times out of 13 hits, then find the probability of A breaking the bulb.
    A 9/120 Correct Answer Incorrect Answer
    B 9/131 Correct Answer Incorrect Answer
    C 9/130 Correct Answer Incorrect Answer
    D 9/100 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Probability of A hitting the bulb = 3/10 Probability of the bulb being broke on getting hit = 3/13 Probability of A breaking the bulb = (3/10) × (3/13) = 9/130

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