Of the four numbers represented on the number line above

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Of the four numbers represented on the number line above [#permalink]

10 Jul 2009, 14:01

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<________q______r______s_______t_________>

Of the four numbers represented on the number line above, is r closest to zero?

(1) q = -s
(2) –t < q

[Reveal] Spoiler: OA

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Re: Number line [#permalink]

10 Jul 2009, 15:18

E

Don't have time right now to explain and I only looked at this for about 10 seconds, but that's my choice for now.

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Re: Number line [#permalink]

10 Jul 2009, 15:40

A.
if q=-s then q and s have same distance to zero. Since r is between them, r is closer than them. It is closest. 1 is suff.

-t<q means that q is closer to zerp than t. But we can not infer any info. about r. Insuff.

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Re: Number line [#permalink]

10 Jul 2009, 18:46

1) q=-s implies that both are equidistance from zero.
so it suff. Ans "A"
2) not Suff

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Re: Number line question (Questionable Official Answer) [#permalink]

27 Oct 2010, 14:09

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I agree answer should be A.

It is easy to create a counter example like the one you did
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Re: Number line question (Questionable Official Answer) [#permalink]

27 Oct 2010, 14:18

Thanks shrouded1. Another GMAT error, it seems.

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Re: Number line question (Questionable Official Answer) [#permalink]

27 Oct 2010, 16:30

niheil wrote:

Thanks shrouded1. Another GMAT error, it seems.

OA is indeed A, and OA is not wrong, Please refer to page #311 of OG 12 for explanation of question #69, OA is given as A.
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Re: Number line question (Questionable Official Answer) [#permalink]

27 Oct 2010, 18:30

thirst4edu, you're right. I must have been looking at the wrong solution. My bad!

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Re: Number line question (Questionable Official Answer) [#permalink]

28 Oct 2010, 01:01

yup..it has to be A.
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Re: Number line question (Questionable Official Answer) [#permalink]

22 Jun 2011, 07:27

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I have a question. When i read this question, I had assumed that "numbers" don't necessarily have to be integers. Or am I wrong? I think the answer would be A if the constraint is explicitly integers. The question is written in a confusing way...
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Re: Number line [#permalink]

12 Sep 2011, 09:19

Guys i have one concern (while saying that r is zero,near Left Hand Side to 0 or near Right Hand Side to zero) that do we need to assume that figure is drawn to scale.

or
whenever its not mentioned that figure is not drawn to scale we ill have to assume that figure is drawn to scale.

Pls clarify.

Thanks

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Re: Number line [#permalink]

12 Sep 2011, 21:31

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enigma6633 wrote:

You don't have to assume that the figure is drawn to scale, especially, never in DS questions.
Here the question is not whether r is 0, it is whether r is closest to 0.

Statement 1 (q = -s), the number line looks something like this:
<________-s_______r_____________s_______t______>

Basically, we know that 0 will lie right in the middle of s and -s. r will certainly be closer to 0 than s or -s since r is in between s and -s.
<________-s______r____0__________s_______t______>
or
<________-s__________0______r____s_______t______>

In either case, r is closer to 0 than s or -s.

Statement 2 (-t < q), the number line looks something like this:
<____-t____q_______r________s_______t______>

0 will lie right in the middle of t and -t
<____-t____q_______r__0______s_______t______>
<____-t____q_______r_______0_s_____________t______>

It is possible that r is closest to 0. It is also possible that s or q is closest to 0. So statement 2 doesn't tell us anything.

Answer (A)
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Re: Number line [#permalink]

12 Sep 2011, 21:39

@Karishma - Thanks for explaining with diagrams. Cheers.!
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Re: Number line [#permalink] 12 Sep 2011, 21:39

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