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      Question

      Which of the following number will replace the question

      mark (?) and complete the given number series? 4, 5, 12, 39, 160, ?
      A 850 Correct Answer Incorrect Answer
      B 800 Correct Answer Incorrect Answer
      C 805 Correct Answer Incorrect Answer
      D 804 Correct Answer Incorrect Answer

      Solution

      ATQ,

      4→5: 4×1+1=5 5→12: 5×2+2=12 12→39: 12×3+3=39 39→160: 39×4+4=160 Next step: 160 × 5 + 5 = 800 + 5 = 805

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