Integers, Rational numbers, Real numbers and Complex numbers.
Real numbers; rational numbers; integers; and of course you can make up lots of other sets to which it belongs.
rational numbers and irrational numbers
Pi is an Irrational number, which is one of the two subcategories of real numbers.
Rational and Real numbers
Integers, Rational numbers, Real numbers and Complex numbers.
Rational numbers.
The one which says rational numbers (ℚ).
Rational numbers, whole numbers, negative numbers, even numbers, integers
The number 1.68 belongs to the subsets of real numbers known as rational numbers and decimal numbers. As a rational number, 1.68 can be expressed as the ratio of two integers (84/50). It is also a decimal number, specifically a terminating decimal, where the digits after the decimal point eventually end.
Only a set can have subsets, a number such as -2.38 cannot have subsets.
It belongs to the interval (25, 27.3), or [-20.9, 10*pi], and infinitely more such intervals.It also belongs to the set of rational numbers, real numbers, complex numbers and quaternions.
Real numbers; rational numbers; integers; and of course you can make up lots of other sets to which it belongs.
The two main DISJOINT subsets of the Real numbers are the rational numbers and the irrational numbers.
Real number set, imaginary number set, and their subsets.
There are infinitely many subsets of real numbers. For example, {2, sqrt(27), -9.37} is one subset.
All rational numbers are real so the phrase "real rational" has no meaning. There are an infinite number of subsets: The emply or null set, {1,1.5, 7/3}, {2}, (0.1,0.2,0.3,0.66..., 5.142857142857...} are some examples.