If R is a relation on the set
Question:

If $R$ is a relation on the set $A=\{1,2,3,4,5,6,7,8,9\}$ given by $x R y \Leftrightarrow y=3 x$, then $R=$

Solution:

(d) none of these

The relation R is defined as

$R=\{(x, y): x, y \in A: y=3 x\}$

$\Rightarrow R=\{(1,3),(2,6),(3,9)\}$

 

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