Find the difference between two sets, namely ${1, -\frac{8}{e}, \sqrt{5}, 7, 9, -\frac{17}{e}, -2} \setminus {9, -\frac{21}{e}, 7, -3, -\frac{17}{e}, -2, \sqrt{5}, 3}$.
Answer:
${-\frac{8}{e}, 1}$
{'source': 'AMPS', 'file': 'amps/mathematica/counting_and_statistics/set_difference/5445.txt'}