Subject

    Quantitative Aptitude

    Topic

    Number

    The difference between a two-digit number and the number obtained by interchanging the positions of its digits is What is the difference between the two digits of that number?

    ক)
    3
    খ)
    4
    গ)
    9
    ঘ)
    Cannot be determined

    Explanation

    Let the ten's digit be x and unit's digit be y. Then, (10x + y) - (10y + x) = 36 => 9(x - y) = 36 => x - y = 4.

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