(8) अलग-अलग व्यक्तियों में से (5) को गोल मेज पर बैठाने के कितने तरीके हैं?
In how many ways can (5) people be selected from (8) distinct people and seated around a circular table?
Explanation opens after your attempt
A. (6720)
Concept
First choose (5) people in \(\binom{8}{5}\) ways and then seat them around a circle in ((5-1)!) ways. The total is \(\binom{8}{5}\cdot4!=1344\).
Why this answer is correct
The correct answer is A. (6720). First choose (5) people in \(\binom{8}{5}\) ways and then seat them around a circle in ((5-1)!) ways. The total is \(\binom{8}{5}\cdot4!=1344\).
Exam Tip
पहले (5) लोगों को \(\binom{8}{5}\) तरीकों से चुनें और फिर गोल में ((5-1)!) तरीकों से बैठाएं। कुल \(\binom{8}{5}\cdot4!=1344\) है।
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