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    ?, 780, 1950, 3250, 4062.5, 4062.5
    Question

    What will come in the place of question (?) mark in following number series:

    ?, 780, 1950, 3250, 4062.5, 4062.5

    A.

    390

    B.

    156

    C.

    165

    D.

    225

    E.

    345

    Correct option is B

    The patten of the series:

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