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OPERATIONS ON SETS
Intersection, Difference and
Union of Sets
By: Lawrence A. Longcop
Intersection of the Sets
The set containing the common elements.
Bing
Cyra
Paul
Angelin
Jennie
Princess
Shiela
Ralf
Emerson
A ∩ B = {Ralf, Emerson}
Example
Two students listed their favorite subjects:
E = {Filipino, Science, Makabayan} and F =
Filipino
Makabayan
Math
English
Science
E ∩ F
Try this one..!
Given M = {4,8,10,14} and V = {1,2,3,15}, what is
M ∩ V ?
Solution:
M ∩ V = { } or Ø.
4
8
10
14
1
2
3
15
Difference of Sets
Denoted by A – B or AB, is the
set containing elements in A but not in
Bing
Cyra
Paul
Angelin
Jennie
Princess
Shiela
Ralf
Emerson
A – B = {Bing, Cyra, Paul,
Angelin}
Union of Sets
Is the set containing all the elements in A or in B
or in both A and B, denoted by A  B.
Bing
Cyra
Paul
Angelin
Jennie
Princess
Shiela
Ralf
Emerson
A  B = {Bing, Cyra, Paul, Angelin, Ralph,
Emerson, Princess, Shiela, Jennie}
Your turn..!
Find L  W.
A
B
C
D
F
G
H
I C
D
L
L W
A
B
F
G
H I
L
D
C
Find L  W =
{A,B,C,D,F,G,H,I,L}
The Complement of a Set
The set containing all the elements in the
universal set but not in the given set.
A U
Sunday Saturday
Monday
Tuesday
Wednesday
Thursday
Friday
Complement of set A
A’ = {Saturday,
Sunday}
Try this...!
Set A = {0,1,4,5,6,7,8} U= {the digits}
A U
9 2
3
0
1
4
5
6
7 8
A’ = {2,3,9}
A
B
C
D
G
H
I
E
F
A B
Operations on sets

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Operations on sets

  • 1. OPERATIONS ON SETS Intersection, Difference and Union of Sets By: Lawrence A. Longcop
  • 2. Intersection of the Sets The set containing the common elements. Bing Cyra Paul Angelin Jennie Princess Shiela Ralf Emerson A ∩ B = {Ralf, Emerson}
  • 3. Example Two students listed their favorite subjects: E = {Filipino, Science, Makabayan} and F = Filipino Makabayan Math English Science E ∩ F
  • 4. Try this one..! Given M = {4,8,10,14} and V = {1,2,3,15}, what is M ∩ V ? Solution: M ∩ V = { } or Ø. 4 8 10 14 1 2 3 15
  • 5. Difference of Sets Denoted by A – B or AB, is the set containing elements in A but not in Bing Cyra Paul Angelin Jennie Princess Shiela Ralf Emerson A – B = {Bing, Cyra, Paul, Angelin}
  • 6. Union of Sets Is the set containing all the elements in A or in B or in both A and B, denoted by A  B. Bing Cyra Paul Angelin Jennie Princess Shiela Ralf Emerson A  B = {Bing, Cyra, Paul, Angelin, Ralph, Emerson, Princess, Shiela, Jennie}
  • 7. Your turn..! Find L  W. A B C D F G H I C D L L W A B F G H I L D C Find L  W = {A,B,C,D,F,G,H,I,L}
  • 8. The Complement of a Set The set containing all the elements in the universal set but not in the given set. A U Sunday Saturday Monday Tuesday Wednesday Thursday Friday Complement of set A A’ = {Saturday, Sunday}
  • 9. Try this...! Set A = {0,1,4,5,6,7,8} U= {the digits} A U 9 2 3 0 1 4 5 6 7 8 A’ = {2,3,9}