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lepaulst lepaulst
  • 29-05-2024
  • Mathematics
Answered

4 Olivia a étudié le pourcentage de droitiers dans trois classes de son école.Elle a noté que 90 % des élèves sont droitiers dans la première classe, 78 personnes dans la deuxième et 85 % dans la troisième. Sachant qu'aucun élève de ces classes n'est ambidextre, détermine la probabilité de choisir trois élèves gauchers si on choisit au hasard un ou une élève dans chaque classe. En fraction irréductibles.

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