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數學是科學之母
2009/03/26 22:34:16瀏覽263|回應0|推薦0

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*數學是科學之母*

  3 x 37 = 111
  6 x 37 = 222
  9 x 37 = 333
  12 x 37 = 444
  15 x 37 = 555
  18 x 37 = 666
  21 x 37 = 777
  24 x 37 = 888
  27 x 37 = 999

 Nice one:
 111.111.111  x  111.111.111 = 12.345.678.987.654.321

 Trapeze:
                           1 x 9 + 2 = 11
                         12 x 9 + 3 = 111
                       123 x 9 + 4 = 1111
                     1234 x 9 + 5 = 11111
                   12345 x 9 + 6 = 111111
                 123456 x 9 + 7 = 1111111
               1234567 x 9 + 8 = 11111111
             12345678 x 9 + 9 = 111111111

  another Trapeze:
                           1 x 8 + 1 = 9
                         12 x 8 + 2 = 98
                       123 x 8 + 3 = 987
                     1234 x 8 + 4 = 9876
                   12345 x 8 + 5 = 98765
                 123456 x 8 + 6 = 987654
               1234567 x 8 + 7 = 9876543
             12345678 x 8 + 8 = 98765432
           123456789 x 8 + 9 = 987654321

  and another one:

                                  0 x 9 + 8 = 8
                                 9 x 9 + 7 = 88
                               98 x 9 + 6 = 888
                             987 x 9 + 5 = 8888
                           9876 x 9 + 4 = 88888
                         98765 x 9 + 3 = 888888
                       987654 x 9 + 2 = 8888888
                     9876543 x 9 + 1 = 88888888
                   98765432 x 9 + 0 = 888888888
                987654321 x 9 - 1  = 8888888888
              9876543210 x 9 - 2  = 88888888888

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