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If G={a,b,c}, what is the value of n(G)?

Answer and explanation

Correct answer: 3

The governing concept is cardinality: n(G) means the number of distinct elements in set G. The set G contains a, b, and c, and these are three different symbols. Set notation does not count the braces, commas, or possible arrangements, and the order of elements is irrelevant. Thus n(G)=3. Option A undercounts, while options C and D add elements that are not present, so option B is correct.

Related tags

SetsCardinalityNumber Of ElementsCommon QuestionsCommonMathematicsClass 9 Mcq

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