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Aptitude

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Total 67 Questions.

Betty+Carol=>43 Questions              //[possible share->(1,42),....(20,23),(21,22),(22,21)....(42,1) ]

so, Alia+Dalia=>24 Questions           //[possible share->(1,23),(2,22),....(23,1) ]

given, at least 1 questions is solved by each & Alia solved maximum.

=>Alia solved max. 23 questions only when Betty:Carol=21:22 or 22:21 

so, Dalia solved 1 question!

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