Page 55 - Numbertheory
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. n = 890    n +10                                        n
                                               900 900
           . n +10 = 900

22538 ( )          34256  24538 ( )                          ()
                                                     14538 ( )
           14638 ( )

                             34256             : ()

           34256 = 3× 63 + 4 × 62 + 2 × 6 + 5
                   = 684 +144 +12 + 5
                   = 809

                 809

                          83 = 512 82 = 64

           809 = 512 + 297 = 83 + 4 × 64 + 43

                = 83 + 4 ×82 + 5×8 + 3
                = 14538

                    . 34256 = 809 = 14538

            (             ) [AHSME 1981] (                         )
           4( )
(9 )                      x = 121122111222111122223
5( )
                              3( )                           2 ()

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