Answer:
A set is to be classified as well-defined or not, depending on the clarity of the determination of the elements. A not well-defined set raises questions as to whether a certain object is an element or not. In other words, a not well-defined set has elements that are not clearly defined.
Examples of not well-defined sets
{smartest men ever lived}
{the kindest people}
{favorite foods}
{top 5 worst movies}
{top 3 most influential brands}
All the mentioned sets are subjective. The “top 5 worst movies" for me could not be for you. The elements or members of the set are not distinct nor exact. The set includes unclear definitions. This is why these sets are considered not well-defined sets.
Step-by-step explanation:
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