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SMO 2015 Senior Round 1 Question 7

SMO · SMO 2015 Senior Round 1

Question 7

If $x$ and $y$ are non-zero numbers such that $x\gt y$, which of the following is always true?
  1. $\frac1x\lt \frac1y$
  2. $\frac xy\gt 1$
  3. $|x|\gt |y|$
  4. $\frac1{xy^2}\gt \frac1{x^2y}$
  5. $\frac xy\gt \frac yx$