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The problem with answer choice b) is that the equation holds true not only for values in the interval [-1,..,5] but also for values which fall outside of this interval. In fact, the equation in answer choice b) holds true for all values -5 < x < 5)

To make an example, if x = -4, the absolute value of x is 4 and the equation is -1 < 4 < 5, which is obviously true.

Answer choice e) is superior because it holds true only if the values of x fall between -1 and 5.

I understand what you mean, but the problem is that the question asks us that if x between -1 and 5 what inequity is right.

it's obvious that b is also correct with the values of x.

The question doesn't ask us to find an inequity so that X will be between -1 and 5. If the question do, E will be correct answer. However, the question asks the opposite thing, what inequity is right if x is between -1 and 5. so, in my opinion, both B and E are correct.

I understand where you're coming from. The question is poorly worded and both answer choices b) and e) are essentially correct. Among those two choices e) is superior because it only holds true for the interval [-1,5] that's why I'd pick it (given that in GMAT questions only one answer choice can be correct). I agree though that this is not a very good reason.

That being said, I'd doubt that you'll come across such an ambiguous question on the actual exam so I wouldn't worry about this question as it is not representative.

I back stanford2012 for his inputs. GMAT ideally should not have answer choices which are ambiguous. So do not worry about these for now _________________

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I just have finished the diagnose test of Gmat club. However, I discover that there quite alot of confusing question or poor wording question. Could any one tell me who are responsible for composing the tests. I doubt the tests' accuracy. Could any one help me assess the tests of Gmat club. Are they good or bad. Whether we should do them or not. I don't have a lot of time for my exam now. Therefore, I need some focus and concentrate on accurate and trustworthy materials.

which of the following inequalities must be true if the values of x are between -1 and 5

a, |3-x| < -3

b, -1<|x|<5

c, |x|-2>2

d, |2+x|>3

e, |x-2|<3

Is this a trully suspect question with both choices B and E correct or am I missing something ?

You're not missing anything; the question has more than one correct answer, and should be ignored. Clearly the question *means* to ask: "Which of the following inequalities is equivalent to the inequality -1 < x < 5", in which case the answer is E. But as it stands, the wording of the question is simply wrong. _________________

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Re: confused question
[#permalink]
06 Oct 2010, 11:35