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    Question

    Find the wrong number in the given number series.

    11, 20, 38, 78, 154, 310
    A 11 Correct Answer Incorrect Answer
    B 310 Correct Answer Incorrect Answer
    C 78 Correct Answer Incorrect Answer
    D 38 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,


    9 * 2 + 2 = 20
    20 * 2 – 2 = 38
    38 * 2 + 2 = 78
    78 * 2 – 2 = 154
    154 * 2 + 2 = 310

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