Mathematics for IGCSE & O level - Sets (Section 1 - No. 13)
Which of the following statements about sets is correct?
The empty set is a subset of every set.
The intersection of two sets is always larger than either set.
The union of two sets always includes all elements from both sets.
Sets can only contain numbers.
Explication
The empty set is a subset of all sets. The union includes all elements of the original sets. Sets can contain numbers, objects, etc.