Find the difference between two sets, namely ${\pi, -4, -\frac{12}{\pi }, -5, \frac{2}{\sqrt{3}}, -7} \setminus {3 \sqrt{3}, 2 \pi, -7, \frac{2}{\sqrt{3}}, -\frac{20}{\pi }, -4}$.
Answer:
${-5, -\frac{12}{\pi }, \pi}$
{'source': 'AMPS', 'file': 'amps/mathematica/counting_and_statistics/set_difference/13017.txt'}