5/6+5/18+5/36+1/12+1/18+5/126+5/168+5/216+1/54=?

问题描述:

5/6+5/18+5/36+1/12+1/18+5/126+5/168+5/216+1/54=?
(1/2+1/4+1/6+1/8)-(1/3+1/6+1/9+1/12)+(1/4+1/8+1/12+1/16)-(1/5+1/10+1/15+1/20)=?
1/(1*3*5)+1/(3*5*7)+1/(5*7*9)+1/(7*9*11)+1/(9*11*13)=?
有过程的必有重赏

5/6+5/18+5/36+1/12+1/18+5/126+5/168+5/216+1/54
=(5/6+5/18+5/36+1/12+1/18)+5/126+5/168+(5/216+1/54)
=(30/36+10/36+5/36+3/36+2/36)+5/126+5/168+(5/216+4/216)
=50/36+5/126+5/168+9/216
=(14288400+408240+306180+428652)/10287648
=1157360/10287648
=0.11249996111842084799168867364047简便计算!!