Теория вероятностей. Барышева В.К - 24 стр.

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A
i
i
Ω =
A
1
A
2
A
3
; A
1
A
2
A
3
; A
1
A
2
A
3
; A
1
A
2
A
3
;
A
1
A
2
A
3
; A
1
A
2
A
3
; A
1
A
2
A
3
; A
1
A
2
A
3
.
A
A
1
A
2
A
3
; A
1
A
2
A
3
; A
1
A
2
A
3
.
B A
1
A
2
A
3
n
m
A
= 3 m
B
= 7 P (A) =
3
8
P (B) =
7
8
N
H
(a; b).
s = 1
1
8
+
1
8
=
3
4
S
P = s/S =
3/4
1
= 0.75.
N
n k
m
m l
H m n
C
m
n
l k
C
l
k
l
m l n k)
A
C
l
k
·
C
ml
nk
P (A) =
C
l
k
C
ml
nk
C
m
n
N
A
2
x+2
= 42.
x = 5