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      Question

      63, 124, 215, 345, 511,

      728 Find the worong number in the given number seriesย 
      A 345 Correct Answer Incorrect Answer
      B 63 Correct Answer Incorrect Answer
      C 511 Correct Answer Incorrect Answer
      D 728 Correct Answer Incorrect Answer
      E none of these Correct Answer Incorrect Answer

      Solution

      43 - 1 = 63 53 - 1 = 124 63 - 1 = 215 73 - 1 = 342 83 - 1 = 511 93 - 1 = 728 Therefore, '342' should come in place of '345

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