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    Question

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

    the following number series? 8 20 50 125 ? 781.25
    A 300 Correct Answer Incorrect Answer
    B 295.5 Correct Answer Incorrect Answer
    C 315 Correct Answer Incorrect Answer
    D 312.5 Correct Answer Incorrect Answer

    Solution

    ATQ,

    Each term × 2.5 → 8×2.5 = 20 20×2.5 = 50 50×2.5 = 125 125×2.5 = 312.5 312.5×2.5 = 781.25

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