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    Question

    In each of the following number series, one term is

    wrong. Find the WRONG term. 1, 5, 14, 31, 55, 91
    A 31 Correct Answer Incorrect Answer
    B 14 Correct Answer Incorrect Answer
    C 91 Correct Answer Incorrect Answer
    D 55 Correct Answer Incorrect Answer
    E None of these Correct Answer Incorrect Answer

    Solution

    Check increments as squares: 1 + 2┬▓ = 1 + 4 = 5 5 + 3┬▓ = 5 + 9 = 14 14 + 4┬▓ = 14 + 16 = 30 (but term is 31) 30 + 5┬▓ = 30 + 25 = 55 55 + 6┬▓ = 55 + 36 = 91 So the third term should be 30, not 31. Wrong term = 31

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