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".
5 subsets of 4 and of 1, 10 subsets of 3 and of 2 adds up to 30.
That means, figure out how many different subsets a set has. In general, if a set has n elements, it has 2n different subsets.
512 subsets
meaning of proper subsets
An element doesn't have subsets. Sets can have subsets.
There are no subsets of irrational numbers. There are subsets of rational numbers, however.
Elements belong to subsets: subsets contain elements (from the parent set).
Aline Kominsky's birth name is Aline Goldsmith.
Aline Bernstein's birth name is Aline Frankau.
Aline Carola's birth name is Aline Halzebartz.
Aline MacMahon's birth name is Aline Laveen MacMahon.
Aline Andrade's birth name is Aline Correa Andrade.
Aline Blanc's birth name is Aline Prez Blanc.
Aline Towne's birth name is Fern Aline Eggen.
Aline Weber's birth name is Aline Cleusa Weber.