Sunday, 20 November 2011

Funny of multiplication

                     Example : 321485 x 7 = 2250395

                                   Board
                 1     3      2     1     4    8     5
                 2    06   04   02   08   16   10
                 3    09   06   03   12   24   15
                 4    10   08   04   16   32   20 
                 5    15   10   05   20   40   25
                 6    18   12   06   24   48   30
                 7    21   14   07   28   56   35 
                 8    24   16   08   32   64   40
                 9    27   18   09   36   72   45


                                Add up these numbers
                               7 x 3                           =     21                
                               7 x   2                         =       14
                               7 x      1                      =         07
                               7 x        4                    =           28
                               7 x          8                  =             56
                               7 x            5                =  +           35
                                                                          2250395

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