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A set (A) has 5 elements. What is the ratio of the number of all relations to the number of reflexive relations on (A)?

Answer and explanation

Correct answer: (2^5:1)

Step 1: The number of all relations is (2^{25}). Step 2: The number of reflexive relations is (2^{25-5}=2^{20}). Step 3: The ratio is (2^{25}:2^{20}=2^5:1).

Related tags

RatioAll RelationsReflexive RelationsClass 12Reflexive RelationRelations And FunctionsMathematicsClass 12 Mcq

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