Problem Solving
试题详情
题目：
If 0 ＜ r ＜ 1 ＜ s ＜ 2, which of the following must be less than 1?
I. r/s
II. rs
III. s - r
湩猠选项:
A、I only
B、II only
C、III only
D、I and II
E、I and III
答案:
A
提问：
If 0 ＜ r ＜ 1 ＜ s ＜ 2, which of the following must be less than 1?
I. r/s
II. rs
III. s - r
I only
II only
III only
I and II
I and III
我选D，答案是A，
这题II哪里不对？
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