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In arrangements of (CHARACTER), how many distinct arrangements have the two (C)'s together but the two (A)'s not together?शब्द (CHARACTER) की व्यवस्थाओं में दोनों (C) साथ हों लेकिन दोनों (A) साथ न हों, ऐसी कितनी भिन्न व्यवस्थाएं हैं?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (7560)(7560)
Treat the two (C)'s as a block, giving (8!/(2!2!)) arrangements, then subtract the cases with adjacent (A)'s, (7!/2!). For two conditions, first form the required block.(C) को खंड मानकर कुल (8!/(2!2!)) व्यवस्थाएं हैं, फिर (A) साथ वाली (7!/2!) व्यवस्थाएं घटाएं। दो शर्तों में पहले अनिवार्य खंड बनाएं।
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