(9) अलग-अलग वस्तुओं को पंक्ति में रखना है। यदि एक विशेष वस्तु हमेशा अंतिम स्थान पर रहे तो व्यवस्थाएं कितनी होंगी?
(9) distinct objects are to be arranged in a row. If one particular object is always in the last position, how many arrangements are possible?
Explanation opens after your attempt
B. (40320)
Concept
The last position is fixed, so the remaining (8) objects are arranged in (8!) ways. The answer is (40320).
Why this answer is correct
The correct answer is B. (40320). The last position is fixed, so the remaining (8) objects are arranged in (8!) ways. The answer is (40320).
Exam Tip
अंतिम स्थान निश्चित है, इसलिए शेष (8) वस्तुएं (8!) तरीकों से रखें। उत्तर (40320) है।
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