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      Question

      Select the number from among the given option that can

      replace the question mark (?) in the following series. 6, 31, 126, 381, 766, ?
      A 731 Correct Answer Incorrect Answer
      B 754 Correct Answer Incorrect Answer
      C 756 Correct Answer Incorrect Answer
      D 771 Correct Answer Incorrect Answer

      Solution

      6 Γ— 5 + 1 = 31 31 Γ— 4 + 2 = 126 126 Γ— 3 + 3 = 381 Β  381 Γ— 2 + 4 = 766 766 Γ— 1 + 5 = 771

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