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Let $A = {1, 2, 3}, B = {1, 3, 5}$ . A relation $R : A \to B$ is defined by $R = {(1, 3) (1, 5) (2, 1)}$ then $R^{- 1}$ is defined by

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{(1, 2), (3, 1), (2, 1)}

None of these

{(1, 2), (3, 1), (1, 3), (1, 5)}

{(1, 2) (5, 1) (3, 1)}

answer is C.

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Detailed Solution

$R = {(1, 3), (1, 5), (2, 1)}$

$R^{- 1} = \{(1, 2) (5, 1) (3, 1)\}$

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