Step 1: Finding whether the given collection represent a set or not
Given,
The collection of interesting books in your school library.
By the definition of a set, we know that A set is a collection of well-defined objects, things or symbols, etc.
Some books are interesting for a person, but some are not.
Opinions are varied from person to person
Hence the given collection is not well defined.
Thus, the given collection does not represent a set.