शब्द (BALLOON) की व्यवस्थाओं में दोनों (L) साथ हों, ऐसी कितनी भिन्न व्यवस्थाएं हैं?
In arrangements of (BALLOON), how many distinct arrangements have both (L)'s together?
Explanation opens after your attempt
B. (360)
Concept
Treat the two (L)'s as one block, giving (6) units with (O) repeated twice, so the count is (6!/2!). Use the block method for together conditions.
Why this answer is correct
The correct answer is B. (360). Treat the two (L)'s as one block, giving (6) units with (O) repeated twice, so the count is (6!/2!). Use the block method for together conditions.
Exam Tip
दोनों (L) को एक खंड मानने पर (6) इकाइयां हैं और (O) दो बार है, इसलिए (6!/2!) है। साथ वाली शर्त में खंड विधि लगाएं।
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