Sigma(10^(-K!) K from 1 to infinite.

回答: 回複:我猜是超越數,可是我不能証明.rustican2011-02-18 07:15:48

=0.1100010000000000000000010000...1.........1..................1...

點後僅在第1,2,6,24,120,....為1,(K!位).

請您先登陸,再發跟帖!