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Mathematics, 29.04.2021 14:00 lainnn974

Dans une classe, le professeur d’EPS choisit au hasard un élève qui sera l’arbitre du match de football.
La probabilité que ce soit un garçon est de 0,7.
Calculer, en justifiant, la probabilité que ce soit une fille

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Dans une classe, le professeur d’EPS choisit au hasard un élève qui sera l’arbitre du match de foo...
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