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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