2. Sample Papers
  3. Railways
  4. Quantitative Aptitude
  5. Simplification

Railways Quantitative Aptitude Simplification Sample Paper Simplification Sample Test Paper-3

  • question_answer
    The value of x, when \[{{2}^{x+4}}{{.3}^{x+1}}=288.\]                                                                                                                                     

    A)  1                    

    B)  \[-1\]      

    C)  0        

    D)  None

    Correct Answer: A

    Solution :

    [a] \[{{2}^{x+4}}{{.3}^{x+1}}=288\] \[{{2}^{4}}{{.2}^{x}}{{.3}^{x}}{{.3}^{1}}=288\] \[{{6}^{x}}=\frac{288}{48}=6\] x = 1


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