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On (A={1,2,3,4,5,6,7}), relation (R) has classes ({1,7},{2,6},{3,5},{4}). How many pairs are in (R)?समुच्चय (A={1,2,3,4,5,6,7}) पर संबंध (R) के वर्ग ({1,7},{2,6},{3,5},{4}) हैं। (R) में कितने युग्म हैं?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (13)(13)
Step 1: The class sizes are (2,2,2,1). Step 2: The number of pairs is (2^2+2^2+2^2+1^2). Step 3: The total is (4+4+4+1=13).चरण 1: वर्गों के आकार (2,2,2,1) हैं। चरण 2: युग्मों की संख्या (2^2+2^2+2^2+1^2) होगी। चरण 3: कुल (4+4+4+1=13) युग्म होंगे।
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