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  • 1 Post By skeeter
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November 27th, 2016, 04:08 PM   #1
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Simple quantitative comparison

OK, I was going thru a very common book for QC, which I find on multiple websites:
"501 Quantitative Comparison Questions"

One such website is
https://www.scribd.com/doc/2744902/5...ison-Questions

If you look at question 18 on page 3, it compares

( p squared ) with - (p squared)

The and explanation that book gives is as follows:
A : Any number squared is positive. Therefore, p squared is positive and - p squared is negative. A positive number is always greater than a negative number. Quantity A is greater
=============

I see that they overlooked the fact that p could be 0 in which case both sides will be equal. So it should actually be D (cannot be determined conclusively).

Just wondering, how could they miss this important fact or am I missing something (?)

Last edited by skipjack; November 27th, 2016 at 07:36 PM.
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November 27th, 2016, 06:10 PM   #2
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yes, the answer provider forgot to include zero as a possible value for p ... given solutions are not always correct. It happens.
Thanks from mmfbk

Last edited by skeeter; November 27th, 2016 at 06:13 PM.
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