Identify The Sets

Basic Concept

A set is a collection of objects that have something in common or follow a rule

A set is well-defined if we are able to tell whether or not any particular object is an element of the set



  • A subject in Grade 7

Yes, it is a well-defined set, because it is clear whether a subject is taught in grade 7


  • A popular actress

No, because some people may consider an actress popular while others do not.


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