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    8, 17, 35, 71, 143, 289, 575
    Question

    Find the wrong number in the following number series.

    8, 17, 35, 71, 143, 289, 575

    A.

    8

    B.

    35

    C.

    17

    D.

    289

    E.

    575

    Correct option is D


    Wrong term = 289
    Pattern of series:
    8 × 2 + 1 = 17
    17 × 2 + 1 = 35
    35 × 2 + 1 = 71
    71 × 2 + 1 =143
    143 × 2 + 1 = 287
    287 × 2 + 1 = 575

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