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    Which of the following numbers will replace the question mark (?) in the given series?15, 17, 37, 115, ?
    Question

    Which of the following numbers will replace the question mark (?) in the given series?
    15, 17, 37, 115, ?

    A.

    470

    B.

    465

    C.

    455

    D.

    460

    Correct option is B

    Given: 15, 17, 37, 115, ?
    Logic: Series follow the pattern, as first multiply by 1, 2, 3, 4 and simultaneously add +2, +3, +4,+5
    Explanation:
    15×1+2=17
    17×2+3=37
    37×3+4=115
    Similarly,
    115×4+5=465
    So, ? is replaced by 465.
    Thus, Option B is the correct answer.

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