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