()ڿ ()ڴ ()ϰ ()ڿ ()ڴ
()ϵ Ѵ.

) () ......() ˣ. ͤ. . ........
      () ......() ܰ. ڱ. . ........

 


ڴ й(߲) 1,3,7 Ͽ ̸ Ȱϱ Ѵ.

        =7, 17, 27, 37...........          
뷳=3, 13, 23, 33...........         
ڱ=1, 11, 21, 31........... س.