Set Theory Symbol

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Across
  1. 2. A \ B
  2. 5. A ⊆ B
  3. 7. Ø
  4. 11. A×B
  5. 12. A ∪ B
  6. 13. set of all possible values
  7. 14. A ∩ B
  8. 15. |A| #A
Down
  1. 1. A ⊇ B
  2. 3. A ⊄ B
  3. 4. 2A
  4. 6. A ∆ B A ⊖ B
  5. 8. A = B
  6. 9. { }
  7. 10. Ac