位置:首页 > 题库频道 > 学历类 > 升学考试 > 高中(高考) > 数学(文科) > 高中数学代数与函数一数列68

已知等差数列 http://picflow.koolearn.com/upload/papers/20140824/20140824014342986477.png中, http://picflow.koolearn.com/upload/papers/20140824/20140824014343017751.png,则 http://picflow.koolearn.com/upload/papers/20140824/20140824014343033352.png=(     )

发布时间:2021-09-25

A.10

B.20

C.30

D.40

试卷相关题目

返回顶部