你搞錯了,是5858..8585這樣的能被11整除,
因為10^(2n+1)+1=(10+1)(...)
可以證明abcdeedcba這樣的能被11整除, 然後往裏麵任意位置塞兩個相同的數字, 比如aggbcdeedcba, 仍然可以被11整除.
你搞錯了,是5858..8585這樣的能被11整除,
因為10^(2n+1)+1=(10+1)(...)
可以證明abcdeedcba這樣的能被11整除, 然後往裏麵任意位置塞兩個相同的數字, 比如aggbcdeedcba, 仍然可以被11整除.
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