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Mathematics, 27.08.2020 03:01 2020davidhines

Uma urna contém 10 bolas brancas,5 vermelhas e 4 pretas, todas iguais e indistinguiveis ao tato . Retirando-se uma bola ao acaso ,qual a probabilidade de ela não ser preta?

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Uma urna contém 10 bolas brancas,5 vermelhas e 4 pretas, todas iguais e indistinguiveis ao tato . Re...
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