扫描二维码，直接登录
题库 / Prep2007E2-DS-8
If n and p are integers, is p > 0 ?
(1) n + 1 > 0
(2) np > 0
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）。
本题错在忽略了题干已经说明n,p都是整数了，所以，根据（2）知n,p同正或同负，再由（1）知，n＞-1，则n可以等于0,1,2…又由（2）限制了n不可能等于0，所以n最小可以取1，那么p一定是＞0的。
本题选C
登录 或 注册 后可以参加讨论