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On (A={1,2,3,4}), if (aRb) when (|a-b|) is even, how many pairs are in (R)?यदि (A={1,2,3,4}) पर (aRb) यदि (|a-b|) सम है, तो (R) में कितने युग्म होंगे?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: 88
Step 1: Even difference means the two elements have the same parity. Step 2: The odd class ({1,3}) gives (4) pairs and the even class ({2,4}) gives (4) pairs. Step 3: Total pairs are (8).चरण 1: सम अंतर का अर्थ है कि दोनों तत्व समान समता के हैं। चरण 2: विषम वर्ग ({1,3}) से (4) और सम वर्ग ({2,4}) से (4) युग्म मिलते हैं। चरण 3: कुल युग्म (8) होंगे।
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