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A relation defined as R = {(1, 2), (3, 4), (2, 4)} find R-1.1. {Ø, (2, 1), (4, 3), (4, 2)}2. {{Ø}, (2, 1), (4, 3), (4, 2)}3. {(2, 1), (4, 3), (4, 2)}4. None of these |
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Answer» Correct Answer - Option 3 : {(2, 1), (4, 3), (4, 2)} Concept: If R is a relation from set A to set B, then inverse relation of R to be denoted by R-1, is a relation from set B to set A. Symbolically R-1 = {(b, a): (a, b) ∈ R for all a ∈ A and b ∈ B}. Calculation: R = {(1, 2), (3, 4), (2, 4)} to find R-1 reverse the sequence (a, b) to (b, a). R-1 = {(2, 1), (4, 3), (4, 2)} Hence, option 3 is the correct answer. |
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