2/1 6/1 12/1 20/1 30/1= 用转换的策略计算急激啊
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2/16/112/120/130/1=用转换的策略计算急激啊2/16/112/120/130/1=用转换的策略计算急激啊2/16/112/120/130/1=用转换的策略计算急激啊1/2+1/6+1/
2/1 6/1 12/1 20/1 30/1= 用转换的策略计算急激啊
2/1 6/1 12/1 20/1 30/1= 用转换的策略计算
急激啊
2/1 6/1 12/1 20/1 30/1= 用转换的策略计算急激啊
1/2+1/6+1/12+1/20+1/30
= (1-1/2)+(1/2-1/3)+(1/3-1/4)+(1/4-1/5)+(1/5-1/6)
= 1-1/6
= 5/6
(二分之一应该写成 1/2 ,而不是 2/1 )
2%1+6%1+12%1+20%1+30%1
1/2+1/6+1/12+1/20+1/30
1/2,-1/6,1/12,-1/20,1/30
1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72
1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72
1+1/2+1/12+1/6+1/20+1/30+1/40+1/56
1+1/2+1/6+1/12+1/20+1/30.+1/901+1/2+1/6+1/12+1/20+1/30+.+1/90简便计算
1/2+1/6+1/12+1/20+1/30+1/42+1/56 简算
1/2+1/6+1/12+1/20+1/30+1/42+1/56简算,
简便运算:1/2+1/6+1/12+1/20+1/30+1/42+1/56
1+1/2+1/6+1/12+1/20+1/30+1/42的简便计算
2/1+6/1+12/1+20/1+30/1+42/1+56/1=?
1/2 - 1/6 - 1/12 - 1/20 - 1/30 - 1/42 - 1/56怎么算
1/2+1/6+1/12+1/20+1/30+.1/380+1/420=
1+1/2+1/6+1/12+1/20+1/30+1/42=?
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等于多少
2/1+6/1+12/1+20/1+30/1+42/1+56/1=