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    Question

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

    8 6 2 ? -1

    9.5
    A 9 Correct Answer Incorrect Answer
    B 8 Correct Answer Incorrect Answer
    C 7 Correct Answer Incorrect Answer
    D 6 Correct Answer Incorrect Answer
    E 10 Correct Answer Incorrect Answer

    Solution

    8 × 0.5 + 2 = 6 6 × 1 - 4 = 2 2 × 0.5 + 6 = 7 7 × 1 - 8 = - 1 - 1 × 0.5 + 10 = 9.5

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