Set Notation
What is a set?
A collection of objects or numbers.
Make a set of first four even numbers.
{2,4,6,8}
What is a subset?
A set completely inside another set.
What does the symbol ∈ mean?
Belongs to
What shape is mainly used in Venn diagrams?
Circles
Which brackets are used to write sets?
Curly brackets { }
Write a set of first four odd numbers
{1,3,5,7}
Is {2,4} a subset of {1,2,3,4,5}? Yes or No
Yes
What does the symbol ∉ mean?
Does not belong to
Venn diagrams show the __________ between sets.
Relationships
Write the set of vowels in English.
{a, e, i, o, u}
Make a set from these even numbers? 12, 15, 19, 24
{12,24}
Which symbol means “is a subset of”?
⊂
Complete the statement: 5 ___ {1,3,5,7,9}
∈
In a Venn diagram, where would the number 6 go if the sets are Even Numbers and Multiples of 3?
In the overlapping section.
What does the universal set contain?
All the elements being discussed.
Make a set from these prime numbers?2, 4,9, 11,15
{2,11}
True or False: {cat, dog} ⊂ {cat, dog, rabbit}
True
Complete the statement: 8 ___ {1,3,5,7,9}
∉
Give one number that belongs in both sets: Even Numbers and Multiples of 5.
Multiples of 10
If U = {1,2,3,4,5,6,7,8,9,10}, list all prime numbers in the set.
Answer: {2,3,5,7}
Write a set containing all odd numbers less than 10.
{1,3,5,7,9}
Write two subsets of the set {a,b,c,d}.
Any correct examples.
Which statement is true? A) 4 ∈ Odd Numbers B) 7 ∈ Prime Numbers C) 12 ∈ Prime Numbers D) 9 ∈ Even Numbers
7 ∈ Prime Numbers
Draw a Venn diagram using: A = Even numbers less than 10 B = Multiples of 3 less than 10
A = {2,4,6,8} B = {3,6,9} Overlap = 6