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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 5 times out of 20 hits, then find the probability of A breaking the bulb.
      A 3/42 Correct Answer Incorrect Answer
      B 3/45 Correct Answer Incorrect Answer
      C 3/40 Correct Answer Incorrect Answer
      D 1/20 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Probability of A hitting the bulb = 3/10Β  Probability of the bulb being broke on getting hit = 5/20 = 1/4 Probability of A breaking the bulb = (3/10) Γ— (1/4) = 3/40

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