(7) अलग-अलग लोगों को गोल मेज पर बैठाना है। तीन विशेष लोग लगातार बैठें तो कितनी व्यवस्थाएं होंगी?
(7) distinct people are to be seated around a circular table. If three particular people sit consecutively, how many arrangements are possible?
Explanation opens after your attempt
A. (720)
Concept
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 \(24\cdot6=144\).
Why this answer is correct
The correct answer is A. (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 \(24\cdot6=144\).
Exam Tip
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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