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From (6) married couples, (4) people are to be selected so that no complete couple is selected. How many selections are possible?(6) विवाहित जोड़ों में से (4) लोगों को चुनना है ताकि कोई पूरा जोड़ा न चुना जाए। कितने चयन संभव हैं?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (240)(240)
Choose (4) couples from (6) and then choose (1) person from each selected couple. The number is (^{6}C_{4}\times2^{4}=240).पहले (6) जोड़ों में से (4) जोड़े चुनें और हर चुने जोड़े से (1) व्यक्ति चुनें। संख्या (^{6}C_{4}\times2^{4}=240)।
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