Chapter 2 Flashcards
1
Q
N
A
Natural numbers {0,1,2,3….}
2
Q
Z
A
Integers
3
Q
Z+
A
Positive integers
4
Q
Q
A
Rational numbers
5
Q
R
A
Real numbers
6
Q
C
A
Complex numbers
7
Q
Singleton set
A
Set with one element
8
Q
Order doesn’t matter in a ___
A
Set
9
Q
Repetition doesn’t matter in a ____
A
set
10
Q
a∈A
A
a is an element of A
11
Q
A⊆B
A
A is a subset of B
12
Q
A⊂B
A
A is a proper set of B
13
Q
Proper sets
A
Sets that don’t include elements of a larger set
14
Q
Cardinality
A
Size of set
15
Q
____ is a subset of any set
A
The null set
