Urne 1

(V), (V), (B), (N), (B), (R), (V), (N), (V), (B), (N)

Dans une urne, nous avons 4 boules vertes (V), 3 boules noires (N), 3 boules bleues (B), et 1 boule rouge (R), indiscernables au toucher.

Quelle est la probabilité de tirer une boule verte (V)?

La probabilité (sous forme de fraction) =


Enter your reply:

 =

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