Mathematics : PU-CET (U.G) 2015 Panjab University Entrance Exam With Answers

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3.

Let R = { ( 3 , 3 ) , ( 6 , 6 ) , ( 9 , 9 ) , ( 12 , 12 ) , ( 6 , 12 ) , ( 3 ,9 ) , ( 3, 12 ) , ( 3 , 6 ) } be a relation on the set A= {3, 6, 9, 12}. The relation R is :

A: an equivalence relation
B: reflexive and symmetric
C: reflexive and transitive
D: only reflexive

The answer is: C

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