Page 71 - Numbertheory
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k               .6    24                  22008
                                       4 + 6 = 10
     .0     k2             .0
                                        4
24                  2k                                          k

0+6=6               k 2 + 2k                             .6
                                                         .6

      72                  6A 6B              [MAӨ 2007] ( )
                                         12 ( ) 10 ( )
16 ( )                        A

                        14 ( )

     6B         4               6A 6B    :( )
            6A 6B                          .4
.9                      . B = 0, 4, 8
 . 72
            6 + A + 6 + B = A + B +12    B =0            9
         9
            . 9 A +12                                      .9
. 72
                           6A 6B = 6660               A =6
                    A +16 B = 4
                                               . 72

                        6264                       A =2

                        A + 20 B = 8

                        6768                         A =7
                                                   A =2
            . 7× 2 =14                   A =7

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