1.18 is a number and number do not contain any sets (of any kind).
The overlapping sections show elements that belong to each of the two (or maybe three) sets that overlap there.The overlapping sections show elements that belong to each of the two (or maybe three) sets that overlap there.The overlapping sections show elements that belong to each of the two (or maybe three) sets that overlap there.The overlapping sections show elements that belong to each of the two (or maybe three) sets that overlap there.
The difference of two sets A and B , to be denoted by A-B, is the set of all those elements which belong to A but not to B
Elements can belong to subsets. Subsets can be elements of sets that are called "power sets".
The intersection of two sets S and T is the set of all elements that belong to both S and T.
The union of sets X and Y is the set consisting of all elements that belong to X, or belong to Y or to both.The union of sets X and Y is the set consisting of all elements that belong to X, or belong to Y or to both.The union of sets X and Y is the set consisting of all elements that belong to X, or belong to Y or to both.The union of sets X and Y is the set consisting of all elements that belong to X, or belong to Y or to both.
Rational numbers
1.18 is a number and number do not contain any sets (of any kind).
The overlapping sections show elements that belong to each of the two (or maybe three) sets that overlap there.The overlapping sections show elements that belong to each of the two (or maybe three) sets that overlap there.The overlapping sections show elements that belong to each of the two (or maybe three) sets that overlap there.The overlapping sections show elements that belong to each of the two (or maybe three) sets that overlap there.
17 belongs to the set of prime numbers
The difference of two sets A and B , to be denoted by A-B, is the set of all those elements which belong to A but not to B
Elements can belong to subsets. Subsets can be elements of sets that are called "power sets".
The intersection of sets A and B.
The intersection of two sets S and T is the set of all elements that belong to both S and T.
real numbers, irrational numbers, ...
Natural numbers.
It can be element of: Rational numbers or Real numbers