发布网友 发布时间:2022-05-14 19:46
共2个回答
热心网友 时间:2023-10-26 22:25
1/2+1/6+1/12+1/20+1/30+1/42+1/56热心网友 时间:2023-10-26 22:25
1/2+1/6+1/12+1/20+1/30+1/42+1/56=1-1/2+1/2-1/3+..+1/7-1/8=1-1/8=7/8热心网友 时间:2023-10-26 22:25
1/2+1/6+1/12+1/20+1/30+1/42+1/56热心网友 时间:2023-10-26 22:25
1/2+1/6+1/12+1/20+1/30+1/42+1/56=1-1/2+1/2-1/3+..+1/7-1/8=1-1/8=7/8