1/4+1/28+1/70+…1/89698=?
1/4+1/28+1/70+…1/89698=?
1/4+1/28+1/70+1/130=?
4/1+28/1+70/1+130/1+208/1=?简算
4\1+28\1+70\1+130\1+208\1=多少.简算,有说明
1/4+1/28+1/70+1/130+1/208=
1/4+1/28+1/70+1/130简算
1/4+1/28+1/70+1/130
4分之1+28分之1+70分之1+130分之1=多少?
28+27+26+……+1=
1|4+1|28+1|70+1|130+1|208+1|304
200×(1-1/2)×(1-1/3)×(1-1/4)×……×(1-1/100)=?
计算,1x1/3-7/12+9/20-11/30+13/40-15/56=?,1/4+1/28+1/70+1/130+1