Questions  

Let R1 be a relation defined by R_1 ={a, b|ab, a, bR}. Then R1 is

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By Expert Faculty of Sri Chaitanya
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a
An equivalence relation on R
b
Reflexive, transitive but not symmetric
c
Symmetric, Transitive but not reflexive
d
Neither transitive not reflexive by symmetric
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detailed solution

Correct option is B

For any a∈R, we have a≥a, therefore the relation R is reflexive but it is not symmetric as (2, 1)∈R but (1, 2)∉R. The relation R is transitive also, because (a, b)∈R, (b, c)∈R imply that a≥b and b≥c which is turn imply that a≥c.

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