1/4+1/28+1/70.+1/9700
1/4+1/28+1/70+.+1/9700 要找规律,今晚8:30之前!
(28+1/4)*1/4等于多少
1/4+1/28+1/70+…1/89698=?
1/4+1/28+1/70+1/130简算
1/4+1/28+1/70+1/130
1/4+1/28+1/70+1/130=?
(1/2-1/3)+(1/4-1/5)+(1/7-1/10)+(1/14-1/15)+(1/28-1/30)
(1)1+1/2+1/3+1/4+1/5+1/6+1/7+1/14+1/28
(1/2-1/3)+(1/4-1/5)+(1/7-1/10)+(1/14-1/15)+(1/28-1/30))
(-28)*(-0.125)+(-28)*1/8-28*(-4/7)
1|4+1|28+1|70+1|130+1|208+1|304
1-1/4-1/28-1/72-1/130 裂项法计算