Subject

    Quantitative Aptitude

    Topic

    Number

    (31)31×(31)−27  =?\left(31\right)^{31}\times\left(31\right)^{-27}\;=?

    ক)
    961 x 861
    খ)
    961 x 961
    গ)
    961 x 2
    ঘ)
    29791

    Explanation

    We know that am×an=am+na^m\times a^n=a^{m+n} ∴(31)31−27\therefore\left(31\right)^{31-27} = 31431^4 = = 961 x 961 .

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