Using Set Notation

Maths: Edexcel GCSE Higher, topic 5.2.2

Using Set Notation

A set represents the specific numbers that are in a group. A set is laid out in curly brackets.

Example 1

Example 1

A = {even numbers between 10 and 15}
- List the elements of set A
List all the numbers between 10 and 15
Identify those that are even and list them as 10, 12 and 14

Example 2

Example 2

A = {1,3,6,8,9}, B = {2,3,7,8}
List the numbers in $A \cap B$
$A \cap B$ means the numbers that are in both set A and set B

Example 3

Example 3

A = {2,3,5,6,9}, B = {2,4,7,8}
List the numbers in $A \cup B$
$A \cup B$ means all of the numbers that are in A or B, so any unique number

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