Mathematics, 23.02.2021 02:30 MissSusan2253

Dans une bibliothèque, les 3/4 des livres dont des romans. Parmi les romans , le tiers sont des romans d'aventure et le reste sont des romans de science-fiction. Calculer de deux façons le proportion des romans de science-fiction dans la bibliothèque?

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Dans une bibliothèque, les 3/4 des livres dont des romans. Parmi les romans , le tiers sont des roma...