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

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

  • question_answer
    If 'x' is any natural number, then \[{{x}^{3}}-\frac{1}{{{x}^{3}}^{{}}}\] will always be greater than or equal to

    A)  \[x+\frac{1}{x}\]         

    B)  \[3\left( x-\frac{1}{x} \right)\]

    C)  \[3\left( x+\frac{1}{x} \right)\]   

    D)  \[\left( {{x}^{3}}+\frac{1}{{{x}^{3}}} \right)\]

    Correct Answer: B

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