6. REAL NUMBERS
A
number x is a real number if x∈Q or x∈I. Thus the set of R
numbers, R=Q∪I such that N∪W∪Z∪Q∪R.
The type of
number we normally use such as 1, 15.83, -1.2, 4/5, etc. Positive or negative,
large or small, whole numbers or decimal numbers are all Real Numbers. They are
called “Real Numbers” because they are
not Imaginary Numbers.For example 1, 2,
-4, π, 3, 5, 0.0003, 1/2 , etc.Real numbers have
no starting or ending. There are infinite real numbers between 1 and 2 as well
as 2 and 3 and so on.
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Real Numbers
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