还没有登录哦！
[Data Sufficiency]
试题详情
题目：
For what percent of those tested for a certain infection was the test accurate; that is, positive for those who had the infection and negative for those who did not have the infection?
(1) Of those who tested positive for the infection, 1/8 did not have the infection.
(2) Of those tested for the infection, 90 percent tested negative.
选项:
答案:
E
提问：
DS题目求解
解答：
点赞0
阅读868
提问：
DS题目求解
解答：
点赞0
阅读869
问个问题
注册太麻烦？点这里查看免费答疑吧！
博币不足
加"GMAT小百科"小智微信
直接送200
