Réponse :
bonsoir
Issues possibles
( R 1 - R 2 - R 3 - R 4 - R 5 - R 6 - B 1 - B 2 - B 3 - B 4 - B 5 -B 6 )
proba (R 1) = 3/4 x 1/6 = 3 /24 = 0.125
proba (B 4 ) = 1/ 4 x 1/6 = 1 /24
proba B pair = 1/4 x 3/6 = 3/24
proba B ou pair = 1/4 + 3 /6 = 3/12 + 6 /12 = 9 /12 = 3 /4
proba R et impair = 3/4 x 3/6 = 9/24
Explications étape par étape
