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      Question

      A bag has 5 red, 4 green, 3 blue balls. Three are drawn

      at random. Find probability all are different colors.
      A 3/11 Correct Answer Incorrect Answer
      B 2/13 Correct Answer Incorrect Answer
      C 7/17 Correct Answer Incorrect Answer
      D 5/11 Correct Answer Incorrect Answer

      Solution

      ATQ,

      Total ways = C(12,3) Favorable = C(5,1)C(4,1)C(3,1)=60 P = 60 / 220 = 3/11

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