500 is mutiple of 100 that is closest to X and 400 is multiple of 100 that is closest to Y, what is mutiple of X and Y?
(1) X>500
(2) Y>400
答案是E,题目什么意思呢?又是怎么解答的呢?
题干说500是最靠近X的整百的数,也就是说450<X<550,同理可以推出350<X<450,问X和Y的乘积。那无论哪个条件,都只能确定X和Y的范围,不能确定具体数值,所以E。
但我映像中好像问题不是这么问的呀……
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