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    Which of the following numbers will replace the question mark (?) in the given series? 122, 135, 161, 200, 252, ?
    Question

    Which of the following numbers will replace the question mark (?) in the given series?
    122, 135, 161, 200, 252, ?

    A.

    217

    B.

    417

    C.

    317

    D.

    517

    Correct option is C

    Given: 
    122, 135, 161, 200, 252, ?
    Logic: Each step adds 13 more than the previous step.
    135 - 122 = 13 (13 × 1)
    161 - 135 = 26 (13 × 2)
    200 - 161 = 39 (13 × 3)
    252 - 200 = 52 (13 × 4)
    Next difference = 13 × 5 = 65
    252 + 65 = 317

    Thus, correct option is (c).

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