$ \frac {x}{y} - \frac {y}{x}=3$,then $\frac {y^3}{x^3} + \frac {x^3}{y^3}$ is
  • $11 \sqrt 3$
  • $3 \sqrt{11}$
  • $10 \sqrt {13}$
  • $15 \sqrt 3$
What is the value $\sqrt[3]{27} + \sqrt[3]{512} + \sqrt[3]{.064}$
  • 10.4
  • 11.04
  • 11.4
  • 11.004
The least number by which 72 be multiplied to make it a perfect cube is
  • 2
  • 3
  • 4
  • 6
The one’s digit of the cube of the number 142 is
  • 2
  • 4
  • 8
  • 6
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