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P(2 caras) = \\frac{3}{8}

",{"_21":65,"_60":66,"_62":67},"70a5c04f-8a4e-4d56-b3a0-8f75be419d2c","B","

P(2 caras) = \\frac{1}{4}

",{"_21":69,"_60":70,"_62":71},"fca3a56d-dc39-4866-a590-9f919ca22be7","C","

P(2 caras) = \\frac{1}{2}

","solution_explanation","statement","

Problema de Palavras - Matemática Aplicada: Qual é a probabilidade de obter exatamente duas caras ao lançar três moedas justas?

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57. (UFRGS-RS) Na promoção de um produto cujo custo unitário é de R$ 5,75 se lê: \"Leve 3, pague 2\". Usando as condições da promoção, a economia máxima que poderá ser feita na compra de 188 itens deste produto é:

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