Set a {1,2,3,4,5}

Set b {2,4,6,8,10}

Set c {5,10,15}

Set d {3,6,9,12,15}

1. The union of a and b

2. The union of c and d

3. The union of b and c

4. The intersection of a and b

5. The intersection of b and c

6. The intersection of c and d

7. The intersection of a and d

8. The union of a and d intersection c

9. The union of c and d intersection a

10. The intersection of a and d union of b