(5) लड़कों और (4) लड़कियों को एक पंक्ति में कितने तरीकों से बैठाया जाए ताकि सभी लड़कियां साथ बैठें?
In how many ways can (5) boys and (4) girls be seated in a row so that all girls sit together?
Explanation opens after your attempt
A. (17280)
Concept
Treat the four girls as one block, then \(6!\cdot4!=17280\). In exams, use the block method for togetherness conditions.
Why this answer is correct
The correct answer is A. (17280). Treat the four girls as one block, then \(6!\cdot4!=17280\). In exams, use the block method for togetherness conditions.
Exam Tip
चार लड़कियों को एक ब्लॉक मानें, तब \(6!\cdot4!=17280\)। परीक्षा में साथ बैठने की शर्त में ब्लॉक विधि लगाएं।
Login to save your score, XP, coins and progress.
