the number system

counting numbers (1,2,3)

natural numbers

N

natural numbers symbol

counting numbers (0,1,2,3)

whole numbers

W

whole numbers symbol

positive and negative numbers

integers

I

integers symbol

numbers that do repeat, all decimals numbers are rational

rational numbers

Q

rational numbers symbol

numbers that do not repeat, any perfect square root and pie are irrational

irrational numbers

_

Q

irrational numbers symbol

all irrational and rational numbers

real numbers