शब्द (PARALLEL) की व्यवस्थाओं में सभी (L) साथ हों, ऐसी कितनी भिन्न व्यवस्थाएं हैं?
In arrangements of (PARALLEL), how many distinct arrangements have all (L)'s together?
Explanation opens after your attempt
D. (360)
Concept
Treat the three (L)'s as one block, giving (6) units with (A) repeated twice, so the count is (6!/2!). A block of identical letters acts as one unit.
Why this answer is correct
The correct answer is D. (360). Treat the three (L)'s as one block, giving (6) units with (A) repeated twice, so the count is (6!/2!). A block of identical letters acts as one unit.
Exam Tip
तीनों (L) को एक खंड मानने पर (6) इकाइयां हैं और (A) दो बार है, इसलिए (6!/2!) है। समान अक्षरों का खंड केवल एक इकाई माना जाता है।
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