Find the difference between two sets, namely ${-4 \sqrt{5}, \sqrt{2}, -9, \pi, -\frac{27}{4}, 8.21} \setminus {\pi, -9, -\frac{12}{\pi }, -\frac{3}{4}, -4 \sqrt{5}, -8.19}$.
Answer:
${-\frac{27}{4}, \sqrt{2}, 8.21}$
{'source': 'AMPS', 'file': 'amps/mathematica/counting_and_statistics/set_difference/42409.txt'}