n
, , b , , , = /n. , , : q = b/n.
, . , , , , b . , . . +b = n. n :
/n + b/n = 1 p +q = 1,
. . .
10 6 , 3 1 , , , 6/10, 3/10 1/10.
?
3/10 , 1/10 . , p = 3/10 + 1/10 = 4/10 = 0,25, . . ( ) .
, . , .
(. . .
, , , , = 1/6×1/6 = 1/36.
. , 5 2 . 4- :
1, 2, 3, 4;
b 4, 3, 2, 1
1/6 b 1/6. 1/36. 1/36. , 5 , . :
= 1/36 + 1/36 + 1/36 + 1/36 = 1/9.
: , , 8 2 ? , 8, .
:
12 | 1/36 |
11 | 2/36 |
10 | 3/36 |
9 | 4/36 |
8 | 5/36 |
15/36 |
|
|
8 2 15/36 5/12.
1 ?
2 ?
3 , , ?
4 , ?
5 ?
6 ? ?
7 ?
8 , .
9 , ?
10 ?
11 ?
12 + q?
13 ?
14 ?
15 ?
16 ?
17 .
18 , ? .
2
2.1
2.2
2.3