(8) अलग-अलग विद्यार्थियों में से (4) को भाषण के क्रम में बुलाने के कितने तरीके हैं?
In how many ways can (4) students be called in speaking order from (8) distinct students?
Explanation opens after your attempt
A. (1680)
Concept
The speaking order is important, so \(^{8}P_4=1680\). In exams, order of performance means permutation.
Why this answer is correct
The correct answer is A. (1680). The speaking order is important, so \(^{8}P_4=1680\). In exams, order of performance means permutation.
Exam Tip
भाषण का क्रम महत्वपूर्ण है, इसलिए \(^{8}P_4=1680\)। परीक्षा में order of performance को permutation मानें।
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