Set theory DM unit 1

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Across
  1. 3. A union B=B union A
  2. 5. If A union B is C then A and B are
  3. 9. set representation method
  4. 12. elements not in given set
  5. 13. If two sets have no elements in common, then they are
  6. 15. elements in A and B
  7. 16. All elements of A plus B
  8. 17. A and B
  9. 18. number of elements in a set
Down
  1. 1. A intersection B = phi
  2. 2. set containing all the elements
  3. 4. A or B
  4. 6. A union A is A
  5. 7. only A
  6. 8. ~A
  7. 10. all elements of A in B
  8. 11. If A then B
  9. 14. diagrammatic representation of set