(6) अलग-अलग मेजों पर (2) विद्यार्थियों को बैठाने के तरीके कितने हैं?
In how many ways can (2) students be seated at (6) different desks?
Explanation opens after your attempt
D. (30)
Concept
The desks are distinct, so \({}^{6}P_{2}=6\times5=30\). Order is counted when seating at distinct places.
Why this answer is correct
The correct answer is D. (30). The desks are distinct, so \({}^{6}P_{2}=6\times5=30\). Order is counted when seating at distinct places.
Exam Tip
मेजें अलग हैं इसलिए \({}^{6}P_{2}=6\times5=30\)। अलग स्थानों पर बैठाने में क्रम गिना जाता है।
Login to save your score, XP, coins and progress.
