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    Question

    What will come in place of the question mark (?) in the

    following series? 2, 5, 16, 47, 138, ?
    A 310 Correct Answer Incorrect Answer
    B 413 Correct Answer Incorrect Answer
    C 518 Correct Answer Incorrect Answer
    D 344 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    2 ├Ч 2 + 1 = 5

    5 ├Ч 3 + 1 = 16

    16 ├Ч 3 - 1 = 47

    47 ├Ч 3 + 1 = 138

    138 ├Ч 3 - 1 = 413

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