Number System Flashcards
1
Q
N
A
{1,2,3,….}
2
Q
W
A
{0,1,2,3,…..}
3
Q
Z
A
{0,±1,±2,±3,……}
4
Q
Set of positive integers
A
Z+={1,2,3,…..}
5
Q
Set of negative integers
A
Z-={-1,-2,-3,…..}
6
Q
Neutral integers
A
0
7
Q
Non-positive integers
A
{0,-1,-2,-3,……}
8
Q
Non-negative integers
A
{0,1,2,3,….}
9
Q
Even numbers
A
{0,2,4,6,….}
10
Q
Odd numbers
A
{1,3,5,7,……}
11
Q
Prime numbers
A
{2,3,5,7,11,13,…….}
12
Q
Define prime numbers
A
Prime numbers have two distinct factors
13
Q
Is 1 a prime number?
A
No
14
Q
Even prime numbers
A
2
15
Q
Square root of prime numbers
A
Irrational numbers
n ε P => √n ε Q↓
