Subject

    Bank Exam

    Topic

    Southeast Bank Ltd. - Trainee Officer - 2018

    Find the value of n, if 27n−13n - \frac{1}{3}= 243

    ক)
    2
    খ)
    3
    গ)
    4
    ঘ)
    5

    Explanation

    Solution: 3 3 3−(n−13)3 - (n - \frac{1}{3}) = 3 5 =>  3 (n−13)(n - \frac{1}{3}) = 5 => 3 n - 3×133 \times \frac{1}{3} = 5 => 3 n - 1 = 5 => 3 n = 5 + 1 = 6 => n = 63\frac{6}{3} = 2

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