- 7

"N" "D" ()
"N" "D" ( ) 2 , , , : , , - . .

.

.

.

- .

      -   8



      1 , 4050 ͕; 2 ; 3 ; 4 , 1215 ͕; 5 ; 6 ; 7 ...


      , , , , ( ) . ...


      1. 2. 3. 4. 5. ...