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Seven people seat themselvesindiscriminately at round table. Theprobability that two distinguished personswill be next to each other isa) 1/3b) 1/2c) 1/4d) 2/3 |
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Answer» total possibility=(7-1)!=6!now two are together so possibility=(6-1)!×2=5!×2so probability=(5!×2)/6!=(5!×2)/(6×5!) =2/6=1/3 |
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