扫描二维码，直接登录
题库 / Prep2007E1-DS-52
If the average (arithmetic mean) of four different numbers is 30, how many of the numbers are greater than 30 ?
(1) None of the four numbers is greater than 60.
(2) Two of the four numbers are 9 and 10, respectively.
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
还没有题目讲解（毕出老师会陆续发布对官方考题的解读，请保持关注）。
不要楼考虑吧第二步
登录 或 注册 后可以参加讨论