Set Symbols
Name the symbols below
∈ AND ∉
'element of' AND 'not an element of'
What is #(A)?
If A ={square, triangle, circle, pentagon}
#(A) = 4
List the elements A= {Even numbers between 1 and 11}
A = {2,4,6,8,10}
A = {1, 2, 3, 4}
B = {2, 3, 5, 7}
What is A ∪ B
A ∪ B = {1,2,3,4,5,7}
Name the symbols below
∪ AND ∩
Union AND Intersection
What is #(G)?
If G = {Even numbers 1-11)
#(G) = 5
Describe the following
B = {3, 6, 9, 12, 15}
B= {multiples of 3 up to 5}
F= {15, 16, 17}
W = {12, 15, 18}
What is F ∩ W?
F ∩ W = {15}
Name the symbol below
Ø
Empty Set
What is #(T)?
If T = {days of the week}
#(T) = 7
Describe the set below
C= {Saturday, Sunday}
C={Weekend days} or {Days beginning with 'S'}
F= {5, 6, 7, 9}
W = {1, 2, 3, 4}
What is F ∪ W?
F ∪ W = {1, 2, 3, 4, 5, 6, 7, 9}
Name the symbols below
A'
A Complement
What is #(U)?
If U = {vowels}
#(U) = 5
Describe the set below fully
R={1,2,3,4,5,6,7,8,9,10}
R = {numbers from 1-10 inclusive}
Z = {14, 18}
C = {15, 19}
What is Z ∩ C?
Z ∩ C = Ø
Name the set symbol below
#(A)
'the number of element in set A..."
What is #(R)?
If R = {Square numbers from 1 to 20 inclusive}
#(R) = 4 {1,4,9,16}
Describe the following
W ={2, 3, 5, 7, 11, 13, 17, 19}
W = {prime numbers between 1 and 20}
True or False?
{1,2,6,8} ∩ {3,4,5,9} = Ø
True!