One possible set, out of infinitely many, is positive irrational numbers.
There are no subsets of irrational numbers. There are subsets of rational numbers, however.
Elements can belong to subsets. Subsets can be elements of sets that are called "power sets".
The subsets of the set {1, 2, 3, 4, 5, 6, 7} include all possible combinations of its elements, including the empty set and the set itself. In total, there are (2^n) subsets, where (n) is the number of elements in the set. For the set {1, 2, 3, 4, 5, 6, 7}, which has 7 elements, there are (2^7 = 128) subsets. These subsets range from the empty set {} to the full set {1, 2, 3, 4, 5, 6, 7}.
It is not possible to answer the question without information about the set B.All that can be said is that if set B has n elements, that is, if the cardinality if B is n, then there are 2n possible subsets of B.
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It is impossible. If a set has n elements, the cardinality of its power set [the number of its subsets] is 2n which must be even.
A set with 27 members has 2^27 = 134217728 subsets - including itself and the null set.
meaning of proper subsets
One possible set, out of infinitely many, is positive irrational numbers.
An element doesn't have subsets. Sets can have subsets.
In a subset each element of the original may or may not appear - a choice of 2 for each element; thus for 3 elements there are 2 × 2 × 2 = 2³ = 8 possible subsets.
There are no subsets of irrational numbers. There are subsets of rational numbers, however.
There are 8 different subsets. The null set. {x} {y} {z} {x y} {x z} {y z} {x y z}
Elements belong to subsets: subsets contain elements (from the parent set).
Elements can belong to subsets. Subsets can be elements of sets that are called "power sets".
The subsets of the set {1, 2, 3, 4, 5, 6, 7} include all possible combinations of its elements, including the empty set and the set itself. In total, there are (2^n) subsets, where (n) is the number of elements in the set. For the set {1, 2, 3, 4, 5, 6, 7}, which has 7 elements, there are (2^7 = 128) subsets. These subsets range from the empty set {} to the full set {1, 2, 3, 4, 5, 6, 7}.