Ch. 1.2 | Set Operations

Question 1

Complement

Answer 1

(an operation on a single set is called a unary operation)

The complement of set M, denoted M’, is the set of all elements in the universal set that are not in the set M.

If the universal set is the set of whole numbers, {0, 1, 2, 3, 4, …}, and M = {1, 3, 5, 7, …}, then M’ = {2, 4, 6, 8, …}.

Question 2

Disjoint Sets

Answer 2

When two sets have nothing in common (their intersection is empty).

Question 3

Intersection

Answer 3

The intersection of sets A and B, written A ∩ B, is the set that contains the elements belonging to both A and B.

Question 4

Union

Answer 4

The union of sets A and B, written A ∪ B, is the set combining all the elements of the given sets.