1 Université Mohammed Premier Échantillonnage

n◦1
¯
A, ¯ B, ¯ C, ¯ D, B ∩¯ A, ¯ C∩A

20 10
30 5
40%
55%
25%

A
B
C
A B
P(A)=0.60 P(B) = 0.3P(AUB)=0.72 A B
40% 45%
5%
10%
60% 40%

30%
90%
80%
OP
OB
card(OB) = 651 card(OP ) = 438 card(OP OB) = 116
Ω = OB OP
card(Ω) = card(OB) + card(OP )−card(OP OB)
card(Ω = 651 + 438 −116 = 973
973
973 ;
card(A) =
9∗103= 9000
9000
9000
9∗9∗8∗7 = 4536
4536
4536

9000 −4536 = 4464
4464
4464
7∗7∗6∗5 = 1470
1470
1470
¯
A
¯
B
¯
C
¯
D
B∩¯ A=D
¯
C∩A
E=B F =¯ C∩A G =¯ A
C4
30 = 27405
C4
18 =
3060
27405−
3060 = 24345
H
F
M
50 = 20 + 30 card(Ω) = 50