1/2+1/6+1/12+1/20+.+1/9900
3个回答
原式=1/1*2+1/2*3+……+1/99*100
=(1/1-1/2)+(1/2-1/3)+……+(1/99-1/100)
=1-1/100
=99/100
相关问题
1%2+1%6+1%12+1%20+……+1%9900=
计算 1/2+1/6+1/12+1/20.+1/9900
1-1/2-1/6-1/12-1/20-...-1/9900=0
1/2+1/6+1/12+1/20+1/30+.+1/9900=?
1/6+1/12+1/20+1/30+……+1/9900=?
6/1+12/1+20/1+30/1+…+9900/1
找规律计算:[1/2]+[1/6]+[1/12]+[1/20]+…+[1/9900]=______.
1/2+1/6+1/12+1/20+1/30+……+1/9900 是多少?
1/2+1/6+1/12+1/20+1/30+...+1/9900怎么算
1/2+1/6+1/12+.+1/9900