@ @TU@ @óïbÿa@‡ÉÜa@ú†bjà@ @ 24 50 [Gauss 2005] ( ) 15 ( ) 33 .8 9( ) 7( ) 1 () . [Pascal 2010] ( ) 4 12 148 ( ) 144 ( ) 121 ( ) 100 ( ) 3( ) [Pascal 2009] ( 3<4<5<8<9 ) . 29 5 5() 4( ) 33 2 () ) [Pascal 2008] ( . 145