[轉貼]神奇喔----數學 - 迷糊ａ小鬼,-日記部落-餅舖

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迷糊ａ小鬼寫於 2006-05-27 編輯

[轉貼]神奇喔----數學

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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