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If (A={-2,-1,0,1,2}) and (R={(a,b):a+b>0}), how many diagonal pairs are in (R)?यदि (A={-2,-1,0,1,2}) और (R={(a,b):a+b>0}) है, तो (R) में कितने विकर्ण युग्म हैं?
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Correct answer:सही उत्तर: 22
Step 1: On the diagonal, (a+b=2a). Step 2: (2a>0) only when (a>0), so (a=1,2). Step 3: Therefore, the diagonal pairs are ((1,1)) and ((2,2)).चरण 1: विकर्ण पर (a+b=2a) होगा। चरण 2: (2a>0) तभी होगा जब (a>0), यानी (a=1,2)। चरण 3: इसलिए केवल ((1,1)) और ((2,2)) विकर्ण युग्म हैं।
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