Each of the five divisions of a certain company sent representatives to a conference. Ift he numbers of representatives sent by four ofthe divisions were 3, 4, 5, and 5, was the range of the numbers of representatives sent by the five divisions greater than 2?
(1)The median of the numbers of representatives sent by the five divisions was greater than the average (arithmetic mean) of these numbers.
(2)The median of the numbers of representatives sent by the five divisions was 4.
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.
3,4,5,5題幹可以化簡為: x是否為3or5?
條件一: 3代入不合,x=5代入 3,4,5,5,5 m>avg =>是 2代入2,3,4,5,5 =>否
條件二: 2,3,4,5,5 =>否 OR x=3 3,3,4,5,5 =>是
結合: X不為3or5 充分
登录 或 注册 后可以参加讨论