Any number written in decimal, with non-zero digits after the decimal point. For example, 5.31.
Any fraction that doesn't represent an integer. For example, 2/3.
Irrational Numbers, such as square root of 2, pi, or e.
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It is not a natural number but it is an integer and a real number.
All integers are real numbers.
Every integer is also a rational number and a real number.
No, 3.4 is not an integer. It is a rational number and a real number, but not an integer.
Yes. An integer has no fractions and if you can write it, it's a real number!