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a family of four brothers and sisters is to parents for a photograph in one row in how many ways can be stated if no two sisters sit together |
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Answer» Answer: All the sisters sit TOGETHER can be taken as 1 unit the 4 BROTHERS & 1 unit of sister can be seated in 5! ways for each of the sisters, who are together can be DONE in 3! ways. ∴ The number of ways = 5! 3!. |
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