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Mathematics, 15.06.2021 20:50 trippynarco

40 Sabrina organise un jeu. Pour former deux équipes, elle propose aux 44 invités de tirer au hasard
un bulletin bleu ou blanc dans une urne.
L'urne contient 22 bulletins blancs et 22 bulletins
bleus.
a. Khalil tire un bulletin le premier.
Quelle est la probabilité que Khalil soit dans l'équipe
des blancs?
b. Quand vient le tour d'Arthur, 9 bulletins blancs et
12 bulletins bleus ont déjà été tirés.
J'ai plus de chances d'être
dans l'équipe des blancs
que dans l'équipe des bleus.
Arthur a-t-il raison ?

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Answers: 1

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