Set Notation

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Class:

Date:

Show your work for each problem.

1.
Which of the following is a correct way to write a set?
1. a)
2. b)
3. c)
4. d)
2.
What does mean?
1. a)5 is equal to set A
2. b)5 is not an element of set A
3. c)5 is a subset of A
4. d)5 is an element of set A
3.
How many elements are in the set ?
4.
Which symbol represents the empty set?
1. a)
2. b)
3. c)
4. d)
5.
If , is an element of ? Answer yes or no.
6.
Write the set in roster form.
7.
Are and the same set?
1. a)Cannot determine
2. b)Yes, order does not matter in sets
3. c)No, they are in different order
4. d)Only if we rearrange them
8.
Simplify the set by removing duplicates. Write your answer using curly braces.
9.
Convert to roster form:
10.
Given , which statement is TRUE?
1. a)
2. b)
3. c)
4. d)
11.
Write a set-builder notation for the set .
12.
How many elements are in the set ?
13.
Find all elements of and count them.
14.
What is ?
1. a)
2. b) (empty set)
3. c)
4. d)
15.
Let and . Write a set-builder notation that describes set .
16.
Which of the following represents an empty set?
1. a)
2. b)
3. c)
4. d)
17.
If , what is the cardinality of ? (Write just the number)
18.
Find and count the elements.