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    Question

    In the given number series, find the wrong number.

    4, 9, 19, 39, 79, 159, 319
    A 4 Correct Answer Incorrect Answer
    B 79 Correct Answer Incorrect Answer
    C 39 Correct Answer Incorrect Answer
    D 159 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    Each number Γ—2 +1:

    4 Γ— 2 + 1 = 9

    9 Γ— 2 + 1 = 19

    19 Γ— 2 + 1 = 39

    39 Γ— 2 + 1 = 79

    79 Γ— 2 + 1 = 159

    159 Γ— 2 + 1 = 319

    Therefore, the series is correct

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