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gwen17
@gwen17
January 2021
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Bonjour pouvez vous m'aider a répondre a cette question?
Merci❤
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croisierfamily
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1°) proba ( obtenir 3 ) = 20/20 - ( 1/20 + 4/20 + 1/10 + 3/10 + 4/20 )
= 20/20 - ( 5/20 + 4/10 + 4/20 )
= 20/20 - ( 9/20 + 4/10 )
= 20/20 - ( 9/20 + 8/20 )
= 20/20 - 17/20
= 3/20 = 0,15 = 15 %
2°) proba ( obtenir un pair ) = p ( 2 ; 4 ; 6 ) = 4/20 + 1/10 + 4/20 = 8/20 + 2/20
= 10/20 = 1/2 = 0,50 = 50 %
proba ( obtenir 5 ) = 3/10 = 0,30 = 30 %
donc proba ( obtenir 2 ; 4 ; 5 ; 6 ) = 0,80 = 80 %
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Bonjour j'aimerais bien un peu d'aide pour faire l'exercice ci-dessus!Merci
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Verified answer
1°) proba ( obtenir 3 ) = 20/20 - ( 1/20 + 4/20 + 1/10 + 3/10 + 4/20 )= 20/20 - ( 5/20 + 4/10 + 4/20 )
= 20/20 - ( 9/20 + 4/10 )
= 20/20 - ( 9/20 + 8/20 )
= 20/20 - 17/20
= 3/20 = 0,15 = 15 %
2°) proba ( obtenir un pair ) = p ( 2 ; 4 ; 6 ) = 4/20 + 1/10 + 4/20 = 8/20 + 2/20
= 10/20 = 1/2 = 0,50 = 50 %
proba ( obtenir 5 ) = 3/10 = 0,30 = 30 %
donc proba ( obtenir 2 ; 4 ; 5 ; 6 ) = 0,80 = 80 %