1/3+1/8+1/15.+1/99

1 2 3 4 56 7 8 9 10 11 12 13 14 15...............96 97 98 99 1+2+3+4+5+6+7+8+9+10+11+12+13+14+15.+99+100 1/3+1/8+1/15+1/24+1/35+...+1/80+1/99 怎么解 1.1/3+1/8+1/15+...1/99= 1/3 1/8 1/15 1/24 ...1/80 1/99 1/3+1/8+1/15+1/24+1/35+1/48+1/63+1/80+1/99怎么求 (1-3/8)*(1-3/15)*(1-3/24)*.*(1-3/99) 1+3+5+.+99 99-1+2×3 (1+1/2)(1-1/2)(1+1/3)(1-1/3).(1+1/99)(1-1/99)简便算法 1/3+1/5+...1/99=? 求和：|1/2-1|+|1/3-1/2|+.+|1/99-1/98|+|1/100-1/99|