(8) लोगों में से दो अलग-अलग जोड़े बनाने हैं ताकि कोई व्यक्ति दो जोड़ों में न आए। कितने तरीके होंगे?
From (8) people, two different pairs are to be formed so that no person appears in both pairs. How many ways are possible?
Explanation opens after your attempt
D. (210)
Concept
First choose (4) people in \(^{8}C_{4}\) ways and split them into two pairs in (3) ways. Total \(70\times3=210\).
Why this answer is correct
The correct answer is D. (210). First choose (4) people in \(^{8}C_{4}\) ways and split them into two pairs in (3) ways. Total \(70\times3=210\).
Exam Tip
पहले (4) लोगों को \(^{8}C_{4}\) तरीकों से चुनें और उन्हें (3) तरीकों से दो जोड़ों में बांटें। कुल \(70\times3=210\)।
Login to save your score, XP, coins and progress.
