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If (R={(1,2),(2,1),(2,3),(3,2),(1,3)}), which pair must be added to make (R) symmetric?यदि (R={(1,2),(2,1),(2,3),(3,2),(1,3)}), तो (R) को सममित बनाने के लिए कौन-सा युग्म जोड़ना होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: ((3,1))((3,1))
Step 1: ((1,2)) and ((2,1)) are present. Step 2: ((2,3)) and ((3,2)) are also present, but the reverse of ((1,3)), namely ((3,1)), is missing. Step 3: Add only the missing reverse pair.चरण 1: ((1,2)) और ((2,1)) मौजूद हैं। चरण 2: ((2,3)) और ((3,2)) भी मौजूद हैं, पर ((1,3)) का उलटा ((3,1)) नहीं है। चरण 3: केवल वही उलटा युग्म जोड़ें जिसकी कमी है।
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