It can be element of: Rational numbers or Real numbers
real numbers, irrational numbers, ...
Natural numbers.
1.18 is a number and number do not contain any sets (of any kind).
17 belongs to the set of prime numbers
Irrational Numbers which are a subset of Real Numbers which are a subset of Complex Numbers ...
The rational numbers, the real numbers and sets of higher order which contain the reals such as the complex numbers.
-10 belongs to the set of all integers denoted by Z.
-28 belongs to: Integers, which is a subset of rationals, which is a subset of reals, which is a subset of complex numbers.
173 belongs to the set of positive natural numbers and it also belongs to the set of prime numbers.
There are many sets of numbers -14 belongs to:set of negative integersset of rational numbersset of real numbersset of complex numbers, which is the biggest known number set
No. One, a counting number, doesn't belong to either of those sets.