(1-1/15)+(1-1/35)+(1-1/63)+(1-1/99)+(1-1/143)+(1-1/195)+(1-1/255)+(1-1/323)+(1-1/399)+(1-1/483)
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/29 00:21:27
![(1-1/15)+(1-1/35)+(1-1/63)+(1-1/99)+(1-1/143)+(1-1/195)+(1-1/255)+(1-1/323)+(1-1/399)+(1-1/483)](/uploads/image/z/43549-61-9.jpg?t=%281-1%2F15%29%2B%281-1%2F35%29%2B%281-1%2F63%29%2B%281-1%2F99%29%2B%281-1%2F143%29%2B%281-1%2F195%29%2B%281-1%2F255%29%2B%281-1%2F323%29%2B%281-1%2F399%29%2B%281-1%2F483%29)
(1-1/15)+(1-1/35)+(1-1/63)+(1-1/99)+(1-1/143)+(1-1/195)+(1-1/255)+(1-1/323)+(1-1/399)+(1-1/483)
(1-1/15)+(1-1/35)+(1-1/63)+(1-1/99)+(1-1/143)+(1-1/195)+(1-1/255)+(1-1/323)+(1-1/399)+(1-1/483)
(1-1/15)+(1-1/35)+(1-1/63)+(1-1/99)+(1-1/143)+(1-1/195)+(1-1/255)+(1-1/323)+(1-1/399)+(1-1/483)
(1-1/15)+(1-1/35)+(1-1/63)+(1-1/99)+(1-1/143)+(1-1/195)+(1-1/255)+(1-1/323)+(1-1/399)+(1-1/483)
=(1+1+.1)-(1/15-1/35-1/63-.1/399-1/483)
=9-(1/3-1/5+1/5-1/7+1/7-1/9+.1/19-1/21+1/21-1/23)
=9-(1/3-1/23)
=9-20/69
=8又49/69