Answer :
Answer:
[tex]P\cup Q=\{1,\ 2,\ 3,\ 4,\ 5,\ 7,\ 8,\ 9, \ 10,\ 11\}[/tex]
Step-by-step explanation:
The union of two sets P and Q, denoted as [tex]P\cup Q,[/tex] is the set of all elements that are in the set P or in the set Q or in both sets P and Q.
Given:
P = {7, 8, 9, 10, 11}
Q = {1, 2, 3, 4, 5}
Then
[tex]P\cup Q=\{1,\ 2,\ 3,\ 4,\ 5,\ 7,\ 8,\ 9, \ 10,\ 11\}[/tex]
When writing the union set, simply write all elements from both sets in on set.