Across
- 6. set of numbers that start from 0
- 8. a set which has no member
- 9. every object which is included in a set
- 10. a set may be expressed using this kind of bracket
Down
- 1. set of numbers that start from 1
- 2. numbers which have more than two factors
- 3. one of three ways to describe a set
- 4. a set which contains all members of the sets under consideration
- 5. numbers which have exactly two factors
- 7. collection of objects which can be clearly defined