1/2+1/6+1/12+1/20+1/30

来源：学生作业帮助网编辑：作业帮时间：2024/05/06 02:17:33

1/2+1/6+1/12+1/20+1/30
1/2+1/6+1/12+1/20+1/30

1/2+1/6+1/12+1/20+1/30
1/2+1/6+1/12+1/20+1/30
=1/2+1/2-1/3+1/3-1/4+1/4-1/5+1/5-1/6
=1-1/6
=5/6;
如果本题有什么不明白可以追问,

1/2+1/6+1/12+1/20+1/30
=(1-1/2)+(1/2-1/3)+(1/3-1/4)+(1/4-1/5)+(1/5-1/6)
=1-1/6
=5/6
祝学习进步