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    Question

    15, 8, 9, 15, 32,

    ? What will come in place of the question mark (?) in the following series?
    A 77.5 Correct Answer Incorrect Answer
    B 82.5 Correct Answer Incorrect Answer
    C 66.2 Correct Answer Incorrect Answer
    D 25.6 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    ATQ, 15 × 0.5 + 0.5 = 8 8 × 1 + 1 = 9 9 × 1.5 + 1.5 = 15 15 × 2 + 2 = 32 32 × 2.5 + 2.5 = 82.5

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