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Sets — Maths STD 11 Science — Question

CBSE BoardEnglish MediumSTD 11 ScienceMathsSets1 Mark
Question
The given collections are sets or not? Justify your answer:
A collection of most dangerous animals of the world.
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Answer

It is not a set as the term 'most dangerous' is not well defined. The notion of dangerous animals differs from person to person.

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