1. { } = ∅ = the empty set, or the null set 2. {8} 3. {16} 4. {27} 5. {31} 6. {60} 7. {8,16} 8. {8,27} 9. {8,31} 10. {8,60} 11. {16,27} 12. {16,31} 13. {16,60} 14. {27,31} 15. {27,60} 16. {31,60} 17. {8,16,27} 18. {8,16,31} 19. {8,16,60} 20. {8,27,31} 21. {8,27,60} 22. {8,31,60} 23. {16,27,31} 24. {16,27,60} 25. {16,31,60} 26. {27,31,60} 27. {8,16,27,31} 28. {8,16,27,60} 29. {8,16,31,60} 30. {8,27,31,60} 31. {16,27,31,60} 32. {8,16,27,31,60} Edwin