. a professora colocou em uma urna 25 bolinhas vermelhas, 15 bolinhas azuis e 10 bolinhas amarelas, todas do mesmo tamanho. ela solicita a um aluno que retire uma bolinha sem olhar. qual a probabilidade do aluno retirar uma bolinha azul? * 10 pontos (a) 25/50 (b) 15/50 (c) 10/50 (d) 45/50
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Category: chemistry |
Author: Torquil Vilhelm
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