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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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