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[" 6.In a recent survey,"40%" houses con...

[" 6.In a recent survey,"40%" houses contained two or more people.Of those containing only one person,"],[25%" were having only a male.What is the percentage of all huouses,which contain exactly one female and no "],[" males? "],[[" (a) "15," (b) "40," (c) "75," (d) Can't be determined "]]

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