Question

easy examples in the book . whether it is a set or not​

Answer 1

Answer:

the set is a proper set of the given universal set

Step-by-step explanation:

Answer 2

Set: A set is a well-defined collection of objects or ideas.

Question: What does it mean for a set to be well-defined?

Ans: A set is well-defined if there is no ambiguity as to whether or not an object belongs to it, i.e., a set is defined so that we can always tell what is and what is not a member of the set.

Example: A = {red, blue, yellow, green, purple} is well-defined since it is clear what is in the set.

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