(8) अलग-अलग व्यक्तियों में से (5) को एक पंक्ति में बैठाने के कितने तरीके हैं?
In how many ways can (5) out of (8) distinct persons be seated in a row?
Explanation opens after your attempt
B. (6720)
Concept
We must choose and arrange (5) persons, so the number is \(^{8}P_{5}\). Seating includes both selection and order.
Why this answer is correct
The correct answer is B. (6720). We must choose and arrange (5) persons, so the number is \(^{8}P_{5}\). Seating includes both selection and order.
Exam Tip
पहले (5) व्यक्तियों को क्रम सहित चुनना है, इसलिए \(^{8}P_{5}\) होगा। बैठाने में चयन और क्रम दोनों शामिल हैं।
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