作业帮8/1+24/1+48/1.2400/1简便计算
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8/1+24/1+48/1.2400/1简便计算
8/1+24/1+48/1.2400/1简便计算
8/1+24/1+48/1.2400/1简便计算
1/8+1/24+1/48+……+1/2400
=1/4(1/2+1/2*3+1/3*4+...+1/24*25)
=1/4(1-1/2+1/2-1/3+1/3-1/4+...+1/24-1/25)
=1/4(1-1/25)
=(1/4)(24/25)
=6/25
大姐，你分子分母写反了吧
8/1+24/1+48/1.2400/1简便计算
简便计算：1/8+1/24+1/48+1/120
1/8+1/24+1/48+1/80
1/8+1/24+1/48+1/80简便计算
简算 8分之1+24分之1+48分之1
8/1+24/1+48/1的简算,
8分之1+24分之1+48分之1+.+48*50分之1=?
(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
1/3+1/8+1/15+1/24+1/35+1/48
1/3,-1/8,1/15,-1/24,1/35,-1/48怎样找规律