(8) विद्यार्थियों को एक पंक्ति में बैठाना है, पर दो विशेष विद्यार्थी साथ न बैठें। कितनी व्यवस्थाएं होंगी?

(8) students are to be seated in a row, but two particular students must not sit together. How many arrangements are possible?

Explanation opens after your attempt
Correct Answer

A. (30240)

Step 1

Concept

Subtract the together arrangements \(7!\cdot2!\) from total (8!). The answer is (40320-10080=30240).

Step 2

Why this answer is correct

The correct answer is A. (30240). Subtract the together arrangements \(7!\cdot2!\) from total (8!). The answer is (40320-10080=30240).

Step 3

Exam Tip

कुल (8!) से साथ बैठने वाली \(7!\cdot2!\) व्यवस्थाएं घटाएं। उत्तर (40320-10080=30240) है।

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Mathematics Answer, Explanation and Revision Hints

(8) विद्यार्थियों को एक पंक्ति में बैठाना है, पर दो विशेष विद्यार्थी साथ न बैठें। कितनी व्यवस्थाएं होंगी? / (8) students are to be seated in a row, but two particular students must not sit together. How many arrangements are possible?

Correct Answer: A. (30240). Explanation: कुल (8!) से साथ बैठने वाली \(7!\cdot2!\) व्यवस्थाएं घटाएं। उत्तर (40320-10080=30240) है। / Subtract the together arrangements \(7!\cdot2!\) from total (8!). The answer is (40320-10080=30240).

Which concept should I revise for this Mathematics MCQ?

Subtract the together arrangements \(7!\cdot2!\) from total (8!). The answer is (40320-10080=30240).

What exam hint can help solve this Mathematics question?

कुल (8!) से साथ बैठने वाली \(7!\cdot2!\) व्यवस्थाएं घटाएं। उत्तर (40320-10080=30240) है।