Order ascending: $-\dfrac{1}{2}, 0, \dfrac{1}{2}, -\dfrac{3}{4}$.

Order ascending: $-\dfrac{1}{2}, 0, \dfrac{1}{2}, -\dfrac{3}{4}$.
  1. $-\dfrac{3}{4} < -\dfrac{1}{2} < 0 < \dfrac{1}{2}$
  2. $0 < -\dfrac{1}{2} < \dfrac{1}{2} < -\dfrac{3}{4}$
  3. $\dfrac{1}{2} < 0 < -\dfrac{1}{2} < -\dfrac{3}{4}$
  4. $-\dfrac{1}{2} < -\dfrac{3}{4} < 0 < \dfrac{1}{2}$

Solution

$-0.75 < -0.5 < 0 < 0.5$.

Asked in: IMO

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