1/8+1/24+1/48+1/80+.+1/360 =

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1/8+1/24+1/48+1/80+.+1/360=1/8+1/24+1/48+1/80+.+1/360=1/8+1/24+1/48+1/80+.+1/360=请检查一下你的题目1/2×4+1/4×

1/8+1/24+1/48+1/80+.+1/360 =
1/8+1/24+1/48+1/80+.+1/360 =

1/8+1/24+1/48+1/80+.+1/360 =
请检查一下你的题目
1/2×4+1/4×6+1/6×8+……+1/18×20
=(1/2-1/4+1/4-1/6+1/6-1/8+……+1/18-1/20)/2
=9/40

1/8+1/24+1/48+1/80 1/8+1/24+1/48+1/80简便计算 (1/8+1/24+1/48+1/80+1/120+1/168+1/224)*64= (1/8+1/24+1/48+1/80+1/120+1/168+1/224)乘64 (1/8+1/24+1/48+1/80+1/120+1/168)简便计算 （1/8+1/24+1/48+1/80+1/120+1/168）乘以56 （8/1+24/1+48/1+80/1+120//1+168/1）*42 1/8+1/24+1/48+1/80+1/120+1/168 （1/8+1/24+1/48+1/80+1/120+1/168）*56 42x(8/1+24/1+48/1+80/1+120/1+168/1)=?求求 42X（1/8+1/24+1/48+1/80+1/120+1/168）求解 8分之1+24分之1+48分之1+80分之1+120分之1=? 8/1+24/1+48/1+80/1+120/1要过程 1/8+1/24+1/48+1/80+.+1/360 = 1/8+1/24+1/48+1/80……+1/2400=? 1/2+1/8+1/24+1/48+1/80要简便哦 1/2 +1/8+1/24+1/48+1/80怎么做 1/3+1/8+1/15+1/24+1/35+1/48+1/63+1/80+1/99怎么求