lesson 6

Question 1

is an unordered collection of objects, called elements.

Answer 1

Sets

Question 2

is used to present elements inside the bracket.

Answer 2

Roster Method

Question 3

describes the set by its property.

Answer 3

Set Former Notation

Question 4

Is the size of a set.

Answer 4

Cardinality

Question 5

is the set of all subsets of the set S. Denoted by P(S).

Answer 5

Power set

Question 6

product is the set of all ordered pairs (a, b) denoted by A × B
where a ∈ A and b ∈ B.

Answer 6

Cartesian product

Question 7

The – of the sets A and B, denoted by
A ∪ B, is the set that contains those elements that are either in A or in B, or
in both.

Answer 7

union

Question 8

Let A and B be sets. The – of the sets A and B, denoted by A ∩ B, is the set containing those elements in both A and B.

Answer 8

intersection

Question 9

Two sets are called – if their intersection is the empty set.

Answer 9

disjoint

Question 10

The – of A and B, denoted by A −
B, is the set containing those elements that are in A but not in B.

Answer 10

difference

Question 11

Let U be the universal set. The–of the set A, denoted by Aҧ, is the complement of A with respect to U. Therefore, the – of the set A is U − A.

Answer 11

complement