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      Question

      D irection: Which of the following will replace ‘?’

      in the following series. 543,’?’, 564 ,588, 660
      A 545 Correct Answer Incorrect Answer
      B 548 Correct Answer Incorrect Answer
      C 556 Correct Answer Incorrect Answer
      D 542 Correct Answer Incorrect Answer
      E 546 Correct Answer Incorrect Answer

      Solution

      Difference of the square of two consecutive prime number added to the number next in series 543 ----  548 ---- 564 ----- 588 ---- 660          5             16             24            72    32 – 22       52-32     72-52     112-72

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