(7) अलग-अलग विद्यार्थियों में से (3) को भाषण के क्रम में बुलाना है। कितने तरीके हैं?
From (7) distinct students, (3) are to be called in speaking order. How many ways are possible?
Explanation opens after your attempt
B. (210)
Concept
The speaking order gives different outcomes, so \(^{7}P_3=210\). In exams, treat performance order as permutation.
Why this answer is correct
The correct answer is B. (210). The speaking order gives different outcomes, so \(^{7}P_3=210\). In exams, treat performance order as permutation.
Exam Tip
भाषण का क्रम अलग परिणाम देता है, इसलिए \(^{7}P_3=210\)। परीक्षा में performance order को permutation मानें।
Login to save your score, XP, coins and progress.
