Interactive practice questions
What is the complement of set $A$A?
The set of all the elements in the universal set that appear exactly once in set $A$A.
A
The set of all the elements that appear more than once in set $A$A.
B
The set of all the elements in the universal set that are not in set $A$A.
C
The set of all the elements in the universal set that are in set $A$A.
D
Easy
< 1min
What is the union of set $A$A and set $B$B?
Easy
< 1min
What is the intersection of set $A$A and set $B$B?
Easy
< 1min
What is the difference of two sets $A$A and $B$B?
Easy
< 1min
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