There are an infinite number of them.
Here are a few:
(But between any two numbers on this list,
there are an infinite number of others.)
-2.9999999999999
-2.99999
-2.99
-2.98
-2.95
-2.93
-2.925
-2.924
-2.91
-2.9
-2.8
-2.6
-2.4
-2.3
-2.299999
-2.299998
-2.299997
-2.29999
-2.2999
-2.2
-2.1
-2.099999
-2.09
-2.08
-2.07
-2.01
-2.009
.
.
.
etc.
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Real numbers are numbers that exist from negative infinity to positive infinity and everything in between. real numbers consist of every number you are used to. Imaginary numbers are numbers that aren't used in conventional math (such as i)
No.
A real number is just an ordinary number. The set of real numbers include all numbers between negative and positive infinity. Real numbers are ordered, and thus do not include imaginary numbers. A subset of real numbers refers to a group, or subsection, of real numbers. For instance, the numbers between 5 and 22 are a subset of real numbers. Another example of a subset is all even numbers, or all odd numbers.
Integers, odd integers, negative integers, odd negative integers, rational numbers, negative rational numbers, real numbers, negative real numbers, square roots of 1, etc.
Negative rational numbers; Negative real numbers; Rational numbers; Real numbers. The number also belongs to the set of complex numbers, quaternions and supersets.