Set theory

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Across
  1. 2. no element common between sets
  2. 6. all outputs true
  3. 8. no.of elements in a set
  4. 10. AU(BNC)=(AUB)N (AUC)
  5. 14. outputs are false
  6. 15. a set which is contained in the given set
  7. 16. combination of two sets
  8. 17. outputs can be true or false
  9. 18. possible combinations of all elements in a given set
Down
  1. 1. AUA=A
  2. 3. or condition
  3. 4. true or false structure
  4. 5. and condition
  5. 7. set which contain repetitive elements
  6. 9. common element between sets
  7. 11. if then condition
  8. 12. opposite of a boolean
  9. 13. AuB=BuA