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Mathematics, 15.06.2021 16:40 stricklandjoseph12

Fernando tiene 10 pares de calcetines 2 negros,2 cafes,3 blancos, uno rojo, uno azul y uno verde .Hoy quiere usar un par blanco ,pero tiene prisa por llegar al trabajo por lo que agarra uno al azar. Si no es blanco lo devolvera al cajon. Si continua agarrando pares aleatoriamente ¿cual es la probabilidad de sacar un par blanco al tercer intento?

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