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Mathematics, 27.04.2021 23:00 azinanees

Una urna contiene 13 bolas negras, 12 rojas y 7 blancas. ¿cual es el meno numero de extracciones para tener la certeza que hay a lo menos de cada color

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Una urna contiene 13 bolas negras, 12 rojas y 7 blancas. ¿cual es el meno numero de extracciones par...
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