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Mistake in Official Guide 11th Edition?

Problem Solving — algebra and arithmetic (GMAT Focus Edition)
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by bigeater1 » Sat May 02, 2009 10:55 am
Hi all,

In the Official GMAT Guide 11th Edition (Orange/Yellow cover), there is a problem solving question with an answer and explanation I can't help but believe is a mistake.

Page 194. Question #20.
The answer explanation claims that the absolute value of -2 is greater than that of +2.

Can anyone confirm? Or am I missing something?
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by DanaJ » Sat May 02, 2009 11:18 pm
I think you're right: |2| = |-2| and this is a classical property of the absolute value.

I've read before (especially in customer reviews on amazon.com) that the OG sometimes contains mistakes.
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by Ian Stewart » Sun May 03, 2009 2:41 am
That was a misprint in earlier printings of OG11, and you must have one of those early printings. If you google 'official corrections gmac', you should find a pdf file with corrections to the above question and a few others.
For online GMAT math tutoring, or to buy my higher-level Quant books and problem sets, contact me at ianstewartgmat at gmail.com

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