Data Sufficiency
试题详情
题目：
In the figure above, if x and y are each less than 90 and PS || QR, is the length of segment PQ less than the length of segment SR?
(1) x>y
(2) x + y > 90
选项:
A、Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B、Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C、BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D、EACH statement ALONE is sufficient.
E、Statements (1) and (2) TOGETHER are NOT sufficient.
答案:
A
提问：
请问老师这道题B错在哪里？[img=/uploads/askimgs/gmat-20211021-145343.jpg][img=/uploads/askimgs/gmat-20211021-145349.jpg]
评分:
0
浏览:
3557
提问：
请问May老师，在直播课有讲过用b²－4ac是否大于等于小余0来判断一条抛物线与x轴有几个交点，想问问可否用4ac－b²与0相比来确定交点个数吗？而且因为y的顶点是4ac－b²/4a，为何不用顶点值与0对比判断交点呢？特别是为何b²－4ac可以用于判断所有情况呢？再次用答疑器中同意问题方便提问，请忽略题目，谢谢。
评分:
1
浏览:
3721
