Which one of the following relations on R is | vedclass

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Question

$a R_1 b \Leftrightarrow|a|=|b|$

$a=b$

$R_1$ is a reflexive symmetric and transitive. ( as we know $a=b$ )

$	herefore(a, a)$ is present

$

Vedclass · Accepted Answer

$a\,{R_1}\,b \Leftrightarrow |a| = |b|$

Vedclass · Answer

$a R_1 b \Leftrightarrow|a|=|b|$

$a=b$

$R_1$ is a reflexive symmetric and transitive. ( as we know $a=b$ )

$	herefore(a, a)$ is present

$	herefore(a, b)(b, a)$ will also be present.

So it is an equivalence relation .

Which one of the following relations on $R$ is an equivalence relation

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