Question

    In each of the following number series, a wrong number is given, find out that number.

    5     13     36     145      719     4321

    A 5 Correct Answer Incorrect Answer
    B 36 Correct Answer Incorrect Answer
    C 13 Correct Answer Incorrect Answer
    D 145 Correct Answer Incorrect Answer

    Solution

    5 x 2 + 3 = 13 13 x 3 - 4 =  35 35 x 4 + 5 = 145 145 x 5 - 6 = 719 719 x 6 + 7 = 4321

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