(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
Correct Answer

D. (210)

Step 1

Concept

First choose (4) people in \(^{8}C_{4}\) ways and split them into two pairs in (3) ways. Total \(70\times3=210\).

Step 2

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 \(70\times3=210\).

Step 3

Exam Tip

पहले (4) लोगों को \(^{8}C_{4}\) तरीकों से चुनें और उन्हें (3) तरीकों से दो जोड़ों में बांटें। कुल \(70\times3=210\)।

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Mathematics Answer, Explanation and Revision Hints

(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?

Correct Answer: D. (210). Explanation: पहले (4) लोगों को \(^{8}C_{4}\) तरीकों से चुनें और उन्हें (3) तरीकों से दो जोड़ों में बांटें। कुल \(70\times3=210\)। / First choose (4) people in \(^{8}C_{4}\) ways and split them into two pairs in (3) ways. Total \(70\times3=210\).

Which concept should I revise for this Mathematics MCQ?

First choose (4) people in \(^{8}C_{4}\) ways and split them into two pairs in (3) ways. Total \(70\times3=210\).

What exam hint can help solve this Mathematics question?

पहले (4) लोगों को \(^{8}C_{4}\) तरीकों से चुनें और उन्हें (3) तरीकों से दो जोड़ों में बांटें। कुल \(70\times3=210\)।