Question

    In each of the following giving number series, a wrong number is given. Find out the wrong number.

    12 11 18 34 89.5

    259.5
    A 89.5 Correct Answer Incorrect Answer
    B 11 Correct Answer Incorrect Answer
    C 34 Correct Answer Incorrect Answer
    D 18 Correct Answer Incorrect Answer
    E 12 Correct Answer Incorrect Answer

    Solution

    12 × 1 - 1 = 11 11 × 1.5 + 1.5 = 18 18 × 2 - 2 = 34 34 × 2.5 + 2.5 = 87.5 87.5 × 3 - 3 = 259.5

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