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(7) distinct people are to be seated around a circular table. If three particular people sit consecutively, how many arrangements are possible?(7) अलग-अलग लोगों को गोल मेज पर बैठाना है। तीन विशेष लोग लगातार बैठें तो कितनी व्यवस्थाएं होंगी?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (720)(720)
Treat the three particular people as one block, giving (5) units around a circle with ((5-1)!) arrangements and (3!) internal ways. The total is (24\cdot6=144).तीन विशेष लोगों को एक ब्लॉक मानें, तो (5) इकाइयों की गोल व्यवस्था ((5-1)!) है और अंदर (3!) तरीके हैं। कुल (24\cdot6=144) है।
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