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1.Relation and Function
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$R$ एक संबंध $‘<’ A$ से $B$ में है, जहाँ $ A = \{1,2, 3, 4\}$ तथा $B= \{1, 3, 5\}$ अर्थात् $(a,\,b) \in R \Leftrightarrow a < b,$ तब $Ro{R^{ - 1}}$ है
A
$\{(1, 3), (1, 5), (2, 3), (2, 5), (3, 5), (4, 5)\}$
B
$\{(3, 1), (5, 1), (3, 2), (5, 2), (5, 3), (5, 4)\}$
C
$\{(3, 3), (3, 5), (5, 3), (5, 5)\}$
D
$\{(3, 3) (3, 4), (4, 5)\}$
Solution
$R = \{(1, 3); (1, 5); (2, 3); (2, 5); (3, 5); (4, 5)\}$
$\{R\{ – 1\}\} = \{ (3, 1), (5, 1), (3, 2), (5, 2); (5, 3); (5, 4) \}$
अत: $Ro{R^{ – 1}}$ $= \{(3, 3); (3, 5); (5, 3); (5, 5)\}$
Standard 12
Mathematics