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Absolute value

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Absolute value

by dbodger » Mon Mar 30, 2009 5:19 pm
Of the five coordinates associated with points A, B, C, D, and E on the number line, which has the greatest absolute value?

A= -2
B= -1
C= 0
D= 1
E= 2

This is a question from the OG. The answer given in the book is A, -2.

I thought that the absolute value of -2 or +2 would be equal to 2. So wouldnt both A and E be correct?

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by Ian Stewart » Mon Mar 30, 2009 6:29 pm
You're surely looking at one of the earlier printings of the Official Guide -- the diagram for that question wasn't printed correctly. In the correct diagram, E is slightly less than 2. If you have that early printing, you can download a pdf file with all of the official corrections. If you google

gmac official guide corrections

it should be the first link that comes up. The only people who would need that file are those who have an early printing - the errors were fixed in later versions of the 11th edition.
If you are looking for online GMAT math tutoring, or if you are interested in buying my advanced Quant books and problem sets, please contact me at ianstewartgmat at gmail.com

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by gmat740 » Mon Mar 30, 2009 8:09 pm
It seems more like a DS question rather than PS!! :D :P

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by dbodger » Tue Mar 31, 2009 8:44 am
Thanks Ian