Question

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

    6 3.5 2.5 ? 8.5

    23.75
    A 9.25 Correct Answer Incorrect Answer
    B 5.25 Correct Answer Incorrect Answer
    C 6.5 Correct Answer Incorrect Answer
    D 10.50 Correct Answer Incorrect Answer
    E 7.50 Correct Answer Incorrect Answer

    Solution

    6 × 0.5 + 0.5 = 3.5 3.5 × 1 - 1 = 2.5 2.5 × 1.5 + 1.5 = 5.25 5.25 × 2 - 2 = 8.5 8.5 × 2.5 + 2.5 = 23.75

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