Which do these belong too?

Natural Numbers

Whole Numbers

Integers

Rational Numbers

Irrational Numbers

Real Numbers

- sqrt(17)

-2

- 9/37

0

pi

Natural Numbers: 0, 1, 2, 3, 4, ...

Whole Numbers: 0, 1, 2, 3, 4, ...

Integers: ..., -3, -2, -1, 0, 1, 2, 3, ...

Rational Numbers: -9/37, 0, 9/37

Irrational Numbers: sqrt(17), pi

Real Numbers: All numbers on the number line, including rational and irrational numbers.