1/2+1/6+1/10+1/12+1/20+1/30+1/42+.+1/2008*2009
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/07/22 23:46:25
1/2+1/6+1/10+1/12+1/20+1/30+1/42+.+1/2008*2009
1/2+1/6+1/10+1/12+1/20+1/30+1/42+.1/2008*2009=?要用简便方法计算
1/2+1/6+1/10+1/12+1/20+1/30+1/42+.1/2008*2009=?要用简便方法计算
1-1/2+1/2-1/3+1/3-1/4+1/4 -1/5+1/5-1/6+1/6-1/7+.+1/2008-1/2009=1-1/2009=2008/2009
1/2+1/6+1/10+1/12+1/20+1/30+1/42+.+1/2008*2009
1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90+1/10
1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72
1/6+1/12+1/20+1/30+1/42
1/2+1/6+1/12+1\20+1/30+1/42+.+1/9900=?
1/2+1/6+1/12+1/20+1/30+1/42+1/56=?
1/2+1/6+1/12+1/20+1/30+1/42+1/56 简算
1/2+1/6+1/12+1/20+1/30+1/42+1/56
1+1/2+1/6+1/12+1/20+1/30+1/42的简便计算
2/1+6/1+12/1+20/1+30/1+42/1+56/1=
1/2-1/6-1/12-1/20-1/30-1/42-1/56等于多少
1/2+1/6+1/12+1/20+1/30+1/42+1/56简算,