(8) व्यक्तियों को गोल मेज पर कितने तरीकों से बैठाया जा सकता है यदि (A) और (B) आमने-सामने बैठें?
In how many ways can (8) people sit around a circular table if (A) and (B) sit opposite each other?
Explanation opens after your attempt
A. (720)
Concept
Fix (A), then the opposite place for (B) is fixed, and the remaining (6) people arrange in (6!) ways. For opposite seating, fix one person first.
Why this answer is correct
The correct answer is A. (720). Fix (A), then the opposite place for (B) is fixed, and the remaining (6) people arrange in (6!) ways. For opposite seating, fix one person first.
Exam Tip
(A) को स्थिर करने पर (B) का विपरीत स्थान निश्चित हो जाता है और शेष (6) लोग (6!) तरीकों से बैठते हैं। आमने-सामने में पहले एक व्यक्ति स्थिर करें।
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