驻马店市老乐山景区:1/2 5/6 7/12 9/20 ( ) 后一个是什么?为什么 ?谢谢
来源:百度文库 编辑:中科新闻网 时间:2024/05/02 06:21:35
11/30
1/(2/3)/(3/4)/(4/5)/(5/6)/(6/7)/(7/8)
1/2+1/3+1/4+1/5+1/6+1/7+.......+1/99+1/100=?
2*(X*1/5+6)=X*(1-1/5)-6
71 1/6×6/7+61 1/5×5/6+51 1/4×4/5+41 1/3×3/4+31 1/2×3/2
1+1/2-1/3+1/4-1/5+1/6+.....-1/n +1/(n+1)
1-1/2+1/3-1/4+1/5-1/6+1/7.............-1/50=?
1 8 9 4 1 1/6的排列规律、0 3/2 2/3 5/4 4/5 7/6
1/2+1/3+1/4+1/5+1/6+1/7+...+1/n
1/2-1/3+1/4-1/5+1/6-.....-1/99+1/100的公式是什么?
1-1/2-1/3-1/4-1/5-1/6-1/7-1/8-......-1/17-1/18-1/19-1/20=?