1
Q
Set of all integers
A
Z
2
Q
Set of all positive integers
A
Z+
3
Q
Set of all rational numbers
A
Q
4
Q
Describe Q
A
{p/q | p € Z, q € Z, and q /= 0}
5
Q
The set of real numbers
A
R
6
Q
The set of all positive real numbers
A
R+
7
Q
The set of all complex numbers
A
C
8
Q
Set of all natural numbers
A
N
9
Q
Define cardinality of set S
A
The number of items in S
10
Q
How to symbolize the cardinality of Set S
A
|S|
11
Q
Union
A
U
12
Q
Intersection symbol
A
n
13
Q
If two sets don’t have any elements in common, their intersection is called a
A
Disjunct
14
Q
The “—” over a set(A) means
A
All values not in the set A
Discrete Structures
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