1/2+1/6+1/12+1/24+1/48+1/56
1/2+1/6+1/12+1/24+1/48+1/56
1/3+1/6+1/12+1/24+1/48
1/2+1/6+1/12+1/24+1/48+1/96=?简便计算
计算 2/3+1/6+1/12+1/24+1/48+1/96+1/192
1/3+1/3+1/6+1/12+1/24+1/48+1/96
1/2+1/6+1/12+...+1/56=
1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72
1/3+1/6+1/12+1/24+1/48+1/96简便计算
1/3-1/6-1/12-1/24-1/48-1/96
1/3+1/6+1/12+1/24+1/48+1/96的简便方法.
1/2+1/6+1/12+1/20+1/30+1/42+1/56=?
1/2+1/6+1/12+1/20+1/30+1/42+1/56 简算