If A = {all books in your library} and B = {all books}, which one of the following is true?

a. A is an element of B


b. B is an element of A


c. A is a proper subset of B


d. B is a proper subset of A

If A = {all books in your library} and B = {all books}, which one of the following is true?
Most certainly C. A is a subset of B because all elements of A are elements of B ("some books" falls under the category of "all books"), and your library does not contain all the books in the world (I hope) so A is a proper subset by definition. Therefore, the answer is C.
Reply:c. A is a subset of B.





An element of A would be one of the books in your library


An element of B would be any book


As all the elements of the set A are also elements of the set B, A is a subset of B.


As there are elements of B which are not also elements of A (i.e. books that aren't in your library), B is not a subset of A.
Reply:C yayayay!!!! i love multiple guess!!!





"element" frequentemente refer to one single solitary value, and most personal libraries contain more than one book
Reply:A is a subset of b
Reply:C. Since both are sets, we wouldn't say "element" to refer to A.