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9th Class Mathematics Number System and its Operations Question Bank Number System

  • question_answer
    The value of x, when \[{{\mathbf{2}}^{x+4}}{{.3}^{x+\mathbf{l}}}=\mathbf{288}\]

    A)  1                    

    B)  -1            

    C)  0                                

    D)  2

    Correct Answer: A

    Solution :

    (a): \[{{2}^{x+4}}{{3}^{x+1}}\]\[={{2}^{5}}\times {{3}^{2}}\] \[\therefore x+4=5\And x+1=2\,\,\,\therefore x=1\]


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