Answer:
A¹ = { 3 , 6, 18 , 24}
Step-by-step explanation:
Explanation:-
Universal set
If all the sets under consideration are the subsets of a fixed set 'U' then the set 'U' is called the Universal set.
Given U = {3, 6, 9, 12, 15, 18, 21, 24}
Given A = {9, 12, 15, 21}
Compliment Of A
The Complement of a set A is all the objects that do not belong to set A
The Compliment of A is denoted by A¹
A¹ = U - A
= {3, 6, 9, 12, 15, 18, 21, 24} - {9, 12, 15, 21}
A¹ = { 3 , 6, 18 , 24}
