Mathematics for IGCSE & O level - Sets (Section 2 - No. 47)
Which of the following statements about the empty set (Ø) is FALSE?
The empty set is a subset of every set.
The empty set has no elements.
The empty set is the complement of the universal set.
The empty set is a set.
Vysvetlenie
The complement of the universal set is the empty set, not vice versa.