(5) couples को round table पर बैठाना है और each couple together रहे। Count कौन-सी है?
(5) couples are seated around a round table and each couple stays together. Which count is correct?
Explanation opens after your attempt
B. \(4!\cdot2^5\)
Concept
The circular arrangement of (5) couple-blocks is (4!) and each block has (2) internal orders. In exams use one less factorial for circular blocks.
Why this answer is correct
The correct answer is B. \(4!\cdot2^5\). The circular arrangement of (5) couple-blocks is (4!) and each block has (2) internal orders. In exams use one less factorial for circular blocks.
Exam Tip
(5) couple-blocks की circular arrangement (4!) है और हर block में (2) internal orders हैं। परीक्षा में circular blocks में one less factorial लें।
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