2.1 Sets Crossword

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Across
  1. 4. The method used: The set of days in the weekend.
  2. 6. The method used: W={x | x is a day of the week}
  3. 8. Given A = {t, a, r} and B = {a, r, t}. Set A is a ____ of set B.
  4. 10. Given A = {t, a, r} and B = {a, r, t}. Sets A and B are ____ ____.
  5. 12. * is an ____ of the set {%, ?, *, @}
  6. 14. Cardinal number of a null set.
  7. 16. {2020, 2021, ...} is a _____ _____of {0, 1, 2,...}
Down
  1. 1. What is Ԑ ?
  2. 2. Sets that have the same number of elements.
  3. 3. The method used: W={Saturday, Sunday}
  4. 5. The set N={1, 2, 3, 4, …}.
  5. 7. A set that is not finite.
  6. 9. The number of distinct elements in a set.
  7. 11. {}
  8. 13. Cardinal number of {e,v,e}
  9. 15. A collection of well-defined objects.