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    Question

    What should come in place of the question mark '?' in the following number series?

    25, 200, 40, ?, 64,

    512
    A 280 Correct Answer Incorrect Answer
    B 320 Correct Answer Incorrect Answer
    C 145 Correct Answer Incorrect Answer
    D 150 Correct Answer Incorrect Answer
    E 300 Correct Answer Incorrect Answer

    Solution

    25 x 8 = 200 200 x 0.2 = 40 40 x 8 = 320 320 x 0.2 = 64 64 x 8 = 512

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