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12 chairs are atrranged in a row numbered 1 to12. 4 men have to be seated in these chairs so that the chairs numbered 1 to 8 should be occupied and no two men occupy adjacent chairs.Find the number of ways the task can be done |
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Answer» Answer: in 1 to 8 CHAIR 4 MWN should be seat so the DONT adjacent.. 1st way four MEN occupy 0dd no sear = 4! = 24 2nd way four men occupy even no seat = 4! = 24 total NUMBER of ways = 24+24 = 48 |
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