Practice set three

Find \(A \cup B\) of the following sets


  1. Given the sets A = {1, 2, 3} and B = {2, 3, 4}

  2. A = {1, 2, 3, 4} and B = {3, 4, 5, 6}

  3. A = {1, 2} and B = {1, 2, 3}

  4. A = {1, 2, 3} and B = {4, 5, 6}

  5. A = {'a', 'b', 'c'} and B = {'c', 'd', 'e'}

  6. A = {1, 2, 3} and B = {1, 2, 3}

  7. A = {1, 2, 3} and B = {3, 4, 5}

  8. A = {1, 2, 3} and B = {0}

  9. A = {1, 2, 3} and B = {2, 3, 4, 5}

  10. A = {1, 2} and B = {2, 3, 4}.

  11. A = {1, 2, 3, 4, 5} and B = {5, 6, 7, 8, 9}

  12. A = {'apple', 'banana', 'cherry'} and B = {'banana', 'cherry', 'date'}

  13. A = {'a', 'b', 'c'} and B = {'d', 'e', 'f'}

  14. A = {1, 2, 3} and B = {3, 4, 5, 6}

  15. A = {1, 2, 3, 4, 5} and B = {4, 5, 6, 7, 8}

  16. A = {1, 2, 3, 4} and B = {5, 6, 7, 8}

  17. A = {1, 2, 3} and B = {1, 2, 3, 4, 5}

  18. A = {1, 2, 3, 4} and B = {3, 4, 5, 6, 7}

  19. A = {1, 2, 3} and B = {4, 5, 6}

  20. A = {1, 2, 3, 4, 5} and B = {1, 2, 3, 4, 5}





Answers 


  1. A ∪ B = {1, 2, 3, 4} 

  2. A ∪ B = {1, 2, 3, 4, 5, 6}

  3.  A ∪ B = {1, 2, 3}

  4.  A ∪ B = {1, 2, 3, 4, 5, 6}

  5.  A ∪ B = {'a', 'b', 'c', 'd', 'e'}

  6.  A ∪ B = {1, 2, 3} 

  7. A ∪ B = {1, 2, 3, 4, 5} 

  8. A ∪ B = {0, 1, 2, 3} 

  9. A ∪ B = {1, 2, 3, 4, 5}

  10.  A ∪ B = {1, 2, 3, 4} 

  11. A ∪ B = {1, 2, 3, 4, 5, 6, 7, 8, 9} 

  12. A ∪ B = {'apple', 'banana', 'cherry', 'date'} 

  13. A ∪ B = {'a', 'b', 'c', 'd', 'e', 'f'}

  14.  A ∪ B = {1, 2, 3, 4, 5, 6} 

  15. A ∪ B = {1, 2, 3, 4, 5, 6, 7, 8} 

  16. A ∪ B = {1, 2, 3, 4, 5, 6, 7, 8} 

  17. A ∪ B = {1, 2, 3, 4, 5}

  18.  A ∪ B = {1, 2, 3, 4, 5, 6, 7} 

  19. A ∪ B = {1, 2, 3, 4, 5, 6} 

  20. A ∪ B = {1, 2, 3, 4, 5}

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