IV
Une porte est munie d'un dispositif portant les touches 1; 2; 3; 4; 5; 6 ; A;B; C.
La port...
Mathematics, 14.04.2021 23:40 webbhlharryteach
IV
Une porte est munie d'un dispositif portant les touches 1; 2; 3; 4; 5; 6 ; A;B; C.
La porte s'ouvre lorsqu'on compose un code formé de trois chiffres distincts suivis d'une lettre .
1° Déterminer le nombre de codes possibles.
2º Déterminer le nombre de codes si les trois chiffres sont impairs .
Answers: 3
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