Complex Numbers
Examples: 3 + 2i, √5i

Real Numbers
e.g. 5, π, -√2

Imaginary Numbers
e.g. 3i, 5i, √2i

Rational Numbers
(can be expressed as p/q, q ≠ 0)
Examples: 1/2, -3, 4.5, 0

Irrational Numbers
(cannot be expressed as p/q)
Examples: √2, π, e

Integers
e.g. -3, 0, 7

Fractions
Examples: 3/4, 7/2

Whole Numbers
e.g. 0, 1, 2, 10

Negative Integers
e.g. -1, -5, -10

Natural Numbers
e.g. 1, 2, 3, 100

Prime Numbers
e.g. 2, 3, 5, 11

Composite Numbers
e.g. 4, 6, 9, 10