(8) अलग-अलग वस्तुओं को एक पंक्ति में रखना है। यदि एक विशेष वस्तु हमेशा पहले स्थान पर रहे तो व्यवस्थाएं कितनी होंगी?
(8) distinct objects are to be arranged in a row. If one particular object is always in the first position, how many arrangements are possible?
Explanation opens after your attempt
A. (5040)
Concept
The first position is fixed, so the remaining (7) objects are arranged in (7!) ways. The answer is (5040).
Why this answer is correct
The correct answer is A. (5040). The first position is fixed, so the remaining (7) objects are arranged in (7!) ways. The answer is (5040).
Exam Tip
पहला स्थान निश्चित है, इसलिए शेष (7) वस्तुएं (7!) तरीकों से रखें। उत्तर (5040) है।
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