标题:
一道GMAT数学题求解释啊！
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作者:
imddung
时间:
2013-5-12 17:08
标题:
一道GMAT数学题求解释啊！
If y is an integer and
, is y = 0?
(1)x ＜ 0
(2)y＜ 1
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 statement TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D
EACH statement ALONE is sufficient.
E
Statements (1) and (2) TOGETHER are NOT sufficient.
求解为什么答案是D 题目里没有说X是整数呀，那当x>0 时，也有可能x<1/2,那么y<1 就不是充分条件了呀？ 求解诶！
作者:
francoisw
时间:
2013-5-13 06:33
y = |x| + x
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