(10) विद्यार्थियों में से (4) को क्रम से पुरस्कार मंच पर बुलाने के कितने तरीके हैं?
In how many ways can (4) students be called to the prize stage in order from (10) students?
Explanation opens after your attempt
A. (5040)
Concept
The calling order to the stage is important, so \(^{10}P_4=5040\). In exams, use permutation when order is specified.
Why this answer is correct
The correct answer is A. (5040). The calling order to the stage is important, so \(^{10}P_4=5040\). In exams, use permutation when order is specified.
Exam Tip
मंच पर बुलाने का क्रम महत्वपूर्ण है, इसलिए \(^{10}P_4=5040\)। परीक्षा में क्रम बताया हो तो permutation लगाएं।
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