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On A = {1, 2, 3}, let R = {(1,2), (2,2), (2,3), (1,3)}. Is R transitive?

Answer and explanation

Correct answer: Yes

A relation R is transitive when, for every a, b, c in A, the presence of (a,b) and (b,c) guarantees the presence of (a,c). Here, (1,2) and (2,3) require (1,3), and (1,3) is present. The pair (2,2) also creates checks such as (2,2) followed by (2,3), which requires (2,3), already included, and (2,2) followed by itself, which requires (2,2), also included. No other available pair creates a missing consequence. Therefore R satisfies the transitivity condition. Option B is incorrect because it overlooks the required pair that is already present. Options C and D describe different properties and do not answer the transitivity question.

Related tags

RelationsTransitive RelationOrdered PairsRelations And FunctionsMathematicsClass 12 Mcq

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