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@ @¶ìÿa@óÝy‹¾a@ u@                                                  @SP

×− +                                                 [AJHSME 1993] ( )

         5463

                 :

19 ( )   15 ( )         10 ( )                       9 ()
                                                          ()
                                            1, 2, 3

         : A + B 1,2, 3

         1

                    2A

                    B

5()        4( )         3( )                         2 ()
5 ()
           7()           1         [AJHSME 1993] (           )
6                   1+ 1                                     )
          10                      ) 1 ()
         1093 − 93       2+1
                              3                   6

                            3(     [AJHSME 1993] (

                              10

826 ( )  819 ( )        93 ( )                       10 ( )

                                                     [AJHSME 1994] ( )
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