(8) अलग-अलग सिक्कों को पंक्ति में रखा जाए। दो विशेष सिक्के दोनों सिरों पर न हों, तो व्यवस्थाएं कितनी होंगी?

(8) distinct coins are arranged in a row. If two particular coins should not occupy the two ends, how many arrangements are possible?

Explanation opens after your attempt
Correct Answer

A. (38880)

Step 1

Concept

Subtract the cases where the two particular coins occupy the two ends, which are \(2!\cdot6!\), from total (8!). The answer is (40320-1440=38880).

Step 2

Why this answer is correct

The correct answer is A. (38880). Subtract the cases where the two particular coins occupy the two ends, which are \(2!\cdot6!\), from total (8!). The answer is (40320-1440=38880).

Step 3

Exam Tip

कुल (8!) में से दोनों विशेष सिक्कों के सिरों पर आने वाली \(2!\cdot6!\) व्यवस्थाएं घटाएं। उत्तर (40320-1440=38880) है।

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(8) अलग-अलग सिक्कों को पंक्ति में रखा जाए। दो विशेष सिक्के दोनों सिरों पर न हों, तो व्यवस्थाएं कितनी होंगी? / (8) distinct coins are arranged in a row. If two particular coins should not occupy the two ends, how many arrangements are possible?

Correct Answer: A. (38880). Explanation: कुल (8!) में से दोनों विशेष सिक्कों के सिरों पर आने वाली \(2!\cdot6!\) व्यवस्थाएं घटाएं। उत्तर (40320-1440=38880) है। / Subtract the cases where the two particular coins occupy the two ends, which are \(2!\cdot6!\), from total (8!). The answer is (40320-1440=38880).

Which concept should I revise for this Mathematics MCQ?

Subtract the cases where the two particular coins occupy the two ends, which are \(2!\cdot6!\), from total (8!). The answer is (40320-1440=38880).

What exam hint can help solve this Mathematics question?

कुल (8!) में से दोनों विशेष सिक्कों के सिरों पर आने वाली \(2!\cdot6!\) व्यवस्थाएं घटाएं। उत्तर (40320-1440=38880) है।