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      Question

      A box contains 4 yellow balls, 5 black balls and 3 white

      balls. If two balls are drawn randomly, find the probability that none of them is black or white
      A 1/11 Correct Answer Incorrect Answer
      B 1/6 Correct Answer Incorrect Answer
      C 1/12 Correct Answer Incorrect Answer
      D 1/15 Correct Answer Incorrect Answer

      Solution

      Required probability = (4 ├Ч 3) ├╖ (12 ├Ч 11) = 12 ├╖ 132 = 1/11

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