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  5. Pair of Linear Equations in Two Variables

10th Class Mathematics Pair of Linear Equations in Two Variables Question Bank MCQs - Pair of Linear Equations in Two Variables

  • question_answer
    The pair of equations \[{{3}^{x+y}}=81,\] \[{{81}^{x-y}}=3\] has:

    A) no solution

    B) unique solution

    C) infinitely many solutions

    D) \[x=2\frac{1}{8},\,\,y=1\frac{7}{8}\]

    Correct Answer: D

    Solution :

    [d] \[x=2\,\,\frac{1}{8},\,\,\,y=1\frac{7}{8}\]


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