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In a row of (8) people, how many arrangements have (C) at one end and exactly (2) people between (A) and (B)?(8) व्यक्तियों की पंक्ति में (C) किसी एक सिरे पर हो और (A) तथा (B) के बीच ठीक (2) व्यक्ति हों, ऐसी कितनी व्यवस्थाएं हैं?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (1920)(1920)
There are (2) ends for (C), and for each, (8) ordered position pairs for (A,B), followed by (5!) arrangements. Fix the end and distance first.(C) के लिए (2) सिरे हैं और प्रत्येक में (A,B) के (8) क्रमित स्थान-जोड़े मिलते हैं, फिर बाकी (5!) तरीके हैं। पहले सिरे और दूरी तय करें।
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