1-1/10-1/100-1/1000-1/10000-…-1/10000000000等于多少
问题描述:
1-1/10-1/100-1/1000-1/10000-…-1/10000000000等于多少
答
=1+等比数列求和=1+(-0.1)/(1-0.1)=8/9
1-1/10-1/100-1/1000-1/10000-…-1/10000000000等于多少
=1+等比数列求和=1+(-0.1)/(1-0.1)=8/9