(7) लोगों की गोल बैठक में दो विशेष व्यक्ति हमेशा साथ बैठें तो व्यवस्थाएं कितनी होंगी?

In a circular seating of (7) people, how many arrangements are possible if two particular people always sit together?

Explanation opens after your attempt
Correct Answer

A. (240)

Step 1

Concept

Treat the two people as one block, giving (6) units in a circle, so \(5!\cdot2!=240\). In exams, also multiply by the internal arrangement of the block.

Step 2

Why this answer is correct

The correct answer is A. (240). Treat the two people as one block, giving (6) units in a circle, so \(5!\cdot2!=240\). In exams, also multiply by the internal arrangement of the block.

Step 3

Exam Tip

दो व्यक्तियों को एक ब्लॉक मानें, गोल में (6) इकाइयां हैं, इसलिए \(5!\cdot2!=240\)। परीक्षा में ब्लॉक के अंदर की व्यवस्था भी गुणा करें।

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Mathematics Answer, Explanation and Revision Hints

(7) लोगों की गोल बैठक में दो विशेष व्यक्ति हमेशा साथ बैठें तो व्यवस्थाएं कितनी होंगी? / In a circular seating of (7) people, how many arrangements are possible if two particular people always sit together?

Correct Answer: A. (240). Explanation: दो व्यक्तियों को एक ब्लॉक मानें, गोल में (6) इकाइयां हैं, इसलिए \(5!\cdot2!=240\)। परीक्षा में ब्लॉक के अंदर की व्यवस्था भी गुणा करें। / Treat the two people as one block, giving (6) units in a circle, so \(5!\cdot2!=240\). In exams, also multiply by the internal arrangement of the block.

Which concept should I revise for this Mathematics MCQ?

Treat the two people as one block, giving (6) units in a circle, so \(5!\cdot2!=240\). In exams, also multiply by the internal arrangement of the block.

What exam hint can help solve this Mathematics question?

दो व्यक्तियों को एक ब्लॉक मानें, गोल में (6) इकाइयां हैं, इसलिए \(5!\cdot2!=240\)। परीक्षा में ब्लॉक के अंदर की व्यवस्था भी गुणा करें।