.
, , . , . , , , . . / . , = 20 3, 23, 43, 63 . . .
, , ( ) .
. , 1 N, (N+1)/2 N N/2, N- .
(, ).
, .
, , ().
N n, k=N/n. N n, np n. :
[ ] . : N=19 n=5, k? k 3, 4.
k= 3 6 7. k= 4 .
. , . 16.
(. . 15) 5 10, 20, 30, 40, 50, 3, 5, 5,.3, 2. 3,6, 1,4.4 (s= 1,2).
, 0,95 , : (3,6 1,96-0,54) = (3,6 1,05) ==(2,55; 4,65).
. . , , , , . . , . . .
. , , , .
- .