Natural numbers: N
Whole numbers: N0
Integers: Z
Positive integers: Z+
Negative integers: Z–
Rational numbets: Q
Real numbers: R
Complex numbers: C
1. Natural Numbers
Counting numbers : N = {1, 2, 3, ...}.
2. Whole Numbers
Counting numbers and zero: N0 = {0,
1, 2, 3, ...}.
3. Integers
Whole numbers and their opposites and zero:
Z+ = N = {1, 2, 3, ...},
Z– = {..., – 3, – 2, – 1},
Z = Z–
∪ {0} ∪ Z+ = {..., – 3, – 2, – 1, 0, 1, 2, 3, ...}.
4. Rational Numbets
Repeating or terminating decimals:
5. Irrational Numbers
Nonrepeating ang nonterminating decimals.
6. Real Numbers
Union of rational numbers: r.
7. Complex Numbers
C = {x + iy │x ∈ R and y ∈ R},
Where is the imaginary unit.
8. N ⊂ Z ⊂ Q ⊂ R ⊂ C
Figure
Sumber
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