Mathematics for IGCSE & O level - Sets (Section 1 - No. 8)
What is a set's complement relative to the universal set?
The set itself.
The empty set.
The set of elements in the universal set but not in the original set.
The set of elements common to both the set and the universal set.
Maelezo
The complement of A contains all the elements from the universal set that are not in A.