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    Question

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

    following series? 4.5, 8, 15, 29, ?, 113
    A 30 Correct Answer Incorrect Answer
    B 18 Correct Answer Incorrect Answer
    C 68 Correct Answer Incorrect Answer
    D 57 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    4.5 × 2 – 1 = 8

    8 × 2 – 1 = 15

    15 × 2 – 1 = 29

    29 × 2 – 1 = 57

    57 × 2 – 1 = 113

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