Answer:
6. {0,1,2,3,4,5,6,7,8,9,}
7. {0,1,2,3,4,5,6,7}
8. {1,3,4,8}
9. {0,1,2,3,4,5,6,7}{0,1,2,3,4,5,6,7,8,9}{0,2,4,6,7,8
10. {01,2,3,4,5,6,7}{0,1,2,3,4,5,6,7,8,9{1,3,4,8}
11. {0,2,4,6,7,8}{0,1,2,3,4,5,6,7,8,9}{1,3,4,8}
15.{0,1,2,3,4,5,6,7}{0,1,2,3,4,5,6,7,8,9,}{0,2,4,6,8}{0,1,2,3,4,5,6,7,8,9}{1,3,4,8}