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Which statement about U = {x : x is an English word with four letters} is correct?

Answer and explanation

Correct answer: It is a set because membership is clearly determined.

A set is a well-defined collection whose membership can be decided objectively. For any specified English word, we can count its letters and determine whether it has exactly four letters. The collection may contain many words, but size does not affect whether it is a set. Therefore the clear membership rule makes option B correct.

Related tags

SetsWell-Defined CollectionMembershipNumber SystemsMathematicsClass 9 Mcq

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