1-1/10-1/100-1/1000-.-1/1000000=
问题描述:
1-1/10-1/100-1/1000-.-1/1000000=
答
首先算后面的减法项:
1/10+1/100=11/100
所以1/10+1/100+1/1000+.+1/1000000=111111/1000000
所以1-1/10-1/100-1/1000-.-1/1000000=1-111111/1000000
=999999/1000000