2.3 and 2.4 Venn diagrams and set operations

    U = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9} 
    A = { 1, 3, 5, 7, 9}
    B = { 1, 4, 5, 6, 7, 8}
    C = { 3, 5, 8, 9} 
    

• Introduce 1 set venn diagrams
• Introduce 2 set venn diagrams and the four different ways to draw them.
  • Equal,
  • Disjoint - two sets A and B are disjoint if no element of A is an element of B and no element of B is an element of A.
  • Subset
  • Overlapping A
• Introduce generic 3 set venn diagrams.
• Introduce at least one, at most one, exactly one.
• The complement of a set A' consists of all elements of the universal set which are not in A.
• Find B'
• The intersection of two sets A and B (A ∩ B) is the set of elements which are in set A and also in set B.
• The union of two sets A and B (A ∪ B) is the set of elements in A or in B or both.
• n(A ∪ B) = n(A) + n(B) - n(A ∩ B)
• The difference of two sets A and B (A-B) is the set of elements in A which are not in B.
• Do Page 69 33-96
• Do 100
• Page 77 Do, 9, 41-46, 47-60, 86