Question

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

    following series? 5, 15, 35, 75, 155, ?
    A 300 Correct Answer Incorrect Answer
    B 315 Correct Answer Incorrect Answer
    C 220 Correct Answer Incorrect Answer
    D 235 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ,

    5 × 2 + 5 = 15

    15 × 2 + 5 = 35

    35 × 2 + 5 = 75

    75 × 2 + 5 = 155

    155 × 2 + 5 = 315

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