If $A=\{2,3,4\}, B=\{1,3,7\}$ and $R=\{(x, y): x \in A, y \in B$ and $x
Since $R=\{(x, y): x \in A, y \in A$ and $x R = {(2, 3), (2, 7), (3, 7), (4, 7)}So, $R^{-1}=\{(3,2),(7,2),(7,3),(7,4)\}$
R = {(2, 3), (2, 7), (3, 7), (4, 7)}So, $R^{-1}=\{(3,2),(7,2),(7,3),(7,4)\}$
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