对于数学data sufficiency 我一直有个疑问..就是如果有两个答案的话是算sufficient的么..就比如说如果问what is the value of x 然后给出 1）x<=17，2) x>=18, 这样是算both statement are NOT sufficient 的么?
yep. you should pick "both together are not sufficient." when it comes to DS, you should think: whether i can draw the conclusion? nor "whether the conclusion can be true" according to this question, you can draw the conclusion that x does not exist ---> you cannot determine the exact amount of the x.
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发表于 2012-10-24 08:20:33
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