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      Question

      Five rods are kept in a line such that any of the rods

      is thrice the length of the previous one. The average length of the rods is about
      A 16 times the first rod Correct Answer Incorrect Answer
      B 24 times the first rod Correct Answer Incorrect Answer
      C 9 times the first rod Correct Answer Incorrect Answer
      D 36 times the first rod Correct Answer Incorrect Answer

      Solution

      The correct answer is B

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