algebraA1453.pdf
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algebraA1453 1
SOSSOSSOSSOS
1111 .. = {1, 2, 3, 4, 5, 6, 7, 8} pi pi pi
= {1, 2, 3, 5, 8}, = {2, 5} , = {1, 2, 3, 5, 6, 8} ) ) = {2, 5} = {1, 8}
2 2 2 2 pi pi
50% pi pi 50% pi pi 10% pi pi
, pi pi
pi , pi pi
) pi pi ? ) pi pi pi ( ) ? ) pi pi ? ) ? ) pi pi ?
3 3 3 3 .. pi , pi
) ( ) ( ) ( )3 3 1P A B P A P B = ( ) ( ) ( )X P A B P A P B =
.1. ( )( ) ( )1 ( )X P A P B P A B=
.2. pi
) 1( )4
P A = 1( )4
P A B = ( )P B
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algebraA1453 2
4 4 4 4 pi .
pi pi, pi pi
25%, pi 3/5 ) pi ? ) pi pi 70 pi pi 90, pi pi?
5 5 5 5 pi pi pi ,
pi pi pi pi pi pi. pi
pi 90%, pi pi ?
6 6 6 6 , 4( )
15P A B = , 1( )
15P A B = 1( )
5P A B = .
pi ( ), ( )P A P B ,
7777 , . 3( )4
P A = , 2( )3
P B = ,
, 5 8( )
12 12P A B
1 = {2, 4, 5, 7} , = {2, 3, 5} = {2, 3, 5, 6} 2
) 40100
, ) 90100
, ) 80100
, ) 30, ) 3 3
) 13
X = , ) 79
4 ) 17
20, ) 80
5 730
23,33%
6 8,
15
1015
,
7