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      Question

      Box A has 10 g of gold and box B has 10 g of copper. 1 g

      of the material in B is added to A and mixed and 1 g of the resulting material in A is added to B and mixed. After this is done a few times, which of the following is true?
      A A has pure copper and B has pure gold Correct Answer Incorrect Answer
      B A gain has pure gold and B again has pure copper Correct Answer Incorrect Answer
      C A has slightly more gold than B Correct Answer Incorrect Answer
      D A has slightly more copper than B Correct Answer Incorrect Answer

      Solution

      The correct answer is C

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