, .
() .
, ( ), , , 6- , (), .
, ( ) n, .. n=6.
, - , (, ).
( ), , , m.
( ) ( 2-, 4- 6- ), .. m=3.
, : () , , . () = m/n. , ( ) :
P(A) = 3/6 = 1/2 = 0,5
. , , 12 , , , , . , 5 7 - .
, , , , : - - . ?
( ) n = 12 ( 12 ), m = 5 ( 5 12 ), : P(A) = m/n = 5/12.
, , ( ), : P(B) = m/n = 7/12.
, , , , , .
, 12 - .
, .
|
|
, n = 12, ( ) m = 12 ( ), :
P(A) = m/n = 12/12 =1
.
( ), ( ) . , , .
, , ( 12 ), , , ( )? , n 12, m = 0 ( ). : ()= m/n = 0/12 =0.
, .
, , . , , , .. ( ) ( ), .. , , :
()= 1/2 = 0,5.