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      Question

      A bag contains 3 black and 9 white balls. One

      ball is drawn at random. What is the probability that the ball drawn is white?
      A 4/7 Correct Answer Incorrect Answer
      B 3/4 Correct Answer Incorrect Answer
      C 3/7 Correct Answer Incorrect Answer
      D 1/2 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      Let number of balls = (3 + 9) = 12
      Number of white balls = 9
      P (drawing a white ball) = 9/12 = 3/4

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