Across
- 5. belong to both set A and B
- 7. what an item in a set is called
- 8. a set that is contained in another set
- 9. set B includes set C
- 11. another name for empty set
Down
- 1. not in the set
- 2. contains no items
- 3. contains all items in every set and subset required
- 4. a collection of objects
- 6. a set that is contained or equal to another set
- 10. belong to Set A or B