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

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

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

点后仅在第1,2,6,24,120,....为1,(K!位).

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