(5) अलग-अलग अध्यायों के प्रश्नपत्र को कितने क्रमों में हल किया जा सकता है यदि पहला अध्याय निश्चित है?
In how many orders can questions from (5) distinct chapters be attempted if the first chapter is fixed?
Explanation opens after your attempt
A. (24)
Concept
The first chapter is fixed, so the remaining (4) chapters can be ordered in (4!) ways. The answer is (24).
Why this answer is correct
The correct answer is A. (24). The first chapter is fixed, so the remaining (4) chapters can be ordered in (4!) ways. The answer is (24).
Exam Tip
पहला अध्याय निश्चित है, इसलिए बाकी (4) अध्याय (4!) क्रमों में आएंगे। उत्तर (24) है।
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