1/8+1/24+1/48+1/80……+1/2400=?

1/8+1/24+1/48+1/80……+1/2400=? 1/8+1/24+1/48+1/80 1/8+1/24+1/48+1/80简便计算 1-2/3-1/6-1/12-1/24-1/48-……1/768 1 3 8 15 24 ☆ 48 63……☆是多少? (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 3/8÷[(1/5+1/4)×3/8] 2/2×4+2/24+2/48……+2/9800 若一组按规律排成的数为:3,8,-15,24,35,-48,63,80,-99……,则这组数的第3n+1项是 3^2-1=8*1 5^2-1=24=8*3 7^2-1=48=8*6……3^2-1=8*1,5^2-1=24=8*3,7^2-1=48=8*6,9^2-1=80=8*10……问：根据上述的式子,你发现了什么?你能用数学式子来说明你的结论是正确的吗? 1+8+16+24+…+8n (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