给一本书编页码,共用了723个数字,这本书一共有多少页?+o4?;r5_8e-G7k(U2^
算式:提示)A*N1h:Y-G6R7J)]*x+o4?;r5_8e-G7k(U2^
答:这本书一共有;i6Y;A'J1W9o6C'd(b.s页。+o4?;r5_8e-G7k(U2^