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Number sets

STUDY
PLAY
Natural Numbers
N:
{1,2,3,..}
Whole Numbers
W:
{0,1,2,3,...}
Integers
J:
{...,-3,-2,-1,0,1,2,3,...}
Rational Numbers
Q:
Every number that can be written as a ration a and b , where a and b are integers and b can not =0 .
Irrational Numbers
I:
Every number that can not be written as a ration a and b , where a and b are integers and b can not =0
Real Number
R:
All rational and irrational numbers