(10) अलग-अलग वस्तुओं में से (4) वस्तुओं की क्रमित व्यवस्था बनानी है, पर एक विशेष वस्तु शामिल नहीं होनी चाहिए। कितने तरीके हैं?

An ordered arrangement of (4) objects is to be made from (10) distinct objects, but one particular object must not be included. How many ways are possible?

Explanation opens after your attempt
Correct Answer

B. (3024)

Step 1

Concept

After excluding the particular object, (9) objects remain. Hence the number of ways is \(^{9}P_4=3024\).

Step 2

Why this answer is correct

The correct answer is B. (3024). After excluding the particular object, (9) objects remain. Hence the number of ways is \(^{9}P_4=3024\).

Step 3

Exam Tip

विशेष वस्तु हटाने पर (9) वस्तुएं बचती हैं। इसलिए \(^{9}P_4=3024\) तरीके होंगे।

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Mathematics Answer, Explanation and Revision Hints

(10) अलग-अलग वस्तुओं में से (4) वस्तुओं की क्रमित व्यवस्था बनानी है, पर एक विशेष वस्तु शामिल नहीं होनी चाहिए। कितने तरीके हैं? / An ordered arrangement of (4) objects is to be made from (10) distinct objects, but one particular object must not be included. How many ways are possible?

Correct Answer: B. (3024). Explanation: विशेष वस्तु हटाने पर (9) वस्तुएं बचती हैं। इसलिए \(^{9}P_4=3024\) तरीके होंगे। / After excluding the particular object, (9) objects remain. Hence the number of ways is \(^{9}P_4=3024\).

Which concept should I revise for this Mathematics MCQ?

After excluding the particular object, (9) objects remain. Hence the number of ways is \(^{9}P_4=3024\).

What exam hint can help solve this Mathematics question?

विशेष वस्तु हटाने पर (9) वस्तुएं बचती हैं। इसलिए \(^{9}P_4=3024\) तरीके होंगे।