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      Question

      What will come in place of the question mark (?) in the

      following series? 4, 40, 30, 300, 290, ?
      A 2900 Correct Answer Incorrect Answer
      B 3000 Correct Answer Incorrect Answer
      C 2600 Correct Answer Incorrect Answer
      D 2700 Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      4 × 10 = 40 40 – 10 = 30 30 × 10 = 300 300 – 10 = 290 290 × 10 = 2900

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