(8) अलग-अलग छात्रों में से (4) को क्रम में पुरस्कार मंच पर बुलाना है। एक विशेष छात्र शामिल हो लेकिन पहले न बुलाया जाए, तो कितने तरीके होंगे?

From (8) distinct students, (4) are to be called to the prize stage in order. If one particular student is included but not called first, how many ways are possible?

Explanation opens after your attempt
Correct Answer

B. (1260)

Step 1

Concept

The particular student has (3) non-first positions, and the other (3) positions are filled from (7) students in \(^{7}P_3\) ways. The total is \(3\cdot210=630\).

Step 2

Why this answer is correct

The correct answer is B. (1260). The particular student has (3) non-first positions, and the other (3) positions are filled from (7) students in \(^{7}P_3\) ways. The total is \(3\cdot210=630\).

Step 3

Exam Tip

विशेष छात्र के लिए अंतिम (3) positions हैं और बाकी (3) positions (7) छात्रों से \(^{7}P_3\) तरीकों से भरते हैं। कुल \(3\cdot210=630\) है।

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Mathematics Answer, Explanation and Revision Hints

(8) अलग-अलग छात्रों में से (4) को क्रम में पुरस्कार मंच पर बुलाना है। एक विशेष छात्र शामिल हो लेकिन पहले न बुलाया जाए, तो कितने तरीके होंगे? / From (8) distinct students, (4) are to be called to the prize stage in order. If one particular student is included but not called first, how many ways are possible?

Correct Answer: B. (1260). Explanation: विशेष छात्र के लिए अंतिम (3) positions हैं और बाकी (3) positions (7) छात्रों से \(^{7}P_3\) तरीकों से भरते हैं। कुल \(3\cdot210=630\) है। / The particular student has (3) non-first positions, and the other (3) positions are filled from (7) students in \(^{7}P_3\) ways. The total is \(3\cdot210=630\).

Which concept should I revise for this Mathematics MCQ?

The particular student has (3) non-first positions, and the other (3) positions are filled from (7) students in \(^{7}P_3\) ways. The total is \(3\cdot210=630\).

What exam hint can help solve this Mathematics question?

विशेष छात्र के लिए अंतिम (3) positions हैं और बाकी (3) positions (7) छात्रों से \(^{7}P_3\) तरीकों से भरते हैं। कुल \(3\cdot210=630\) है।