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05 May 2016, 04:52
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What is the value of |n| + 5?
(1) n^3 < n
(2) n^3 = 16n
(1) n^3 < n
(2) n^3 = 16n
Archived Topic
Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
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05 May 2016, 06:41
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[quote="Bunuel"]What is the value of |n| + 5?
(1) n^3 0 or n^2>1.... n1 is not VALID..
if n is +ive, \(n^2-1<0... n^2<1\).... n lies between 1 and 0...
No unique value..
Insuff..
(2) n^3 = 16n
\(n^3-16n = 0.... n(n^2-16) = 0\)...
so either n is 16 or n^2 = 16..although n can be -4 or 4from n^2-16 = 0.. we are looking for MOD |n| so two values 0 or 4..
Insuff
Combined..
Staement I tells us that n is NOT 0, and II gives us 0 and 4 as the value..
so only possible value = 4
Suff
C
(1) n^3 0 or n^2>1.... n1 is not VALID..
if n is +ive, \(n^2-1<0... n^2<1\).... n lies between 1 and 0...
No unique value..
Insuff..
(2) n^3 = 16n
\(n^3-16n = 0.... n(n^2-16) = 0\)...
so either n is 16 or n^2 = 16..although n can be -4 or 4from n^2-16 = 0.. we are looking for MOD |n| so two values 0 or 4..
Insuff
Combined..
Staement I tells us that n is NOT 0, and II gives us 0 and 4 as the value..
so only possible value = 4
Suff
C
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THERE IS LIKELY A BETTER DISCUSSION OF THIS EXACT QUESTION.
This discussion does not meet community quality standards. It has been retired.
If you would like to discuss this question please re-post it in the respective forum. Thank you!
To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
19 Jan 2022, 07:08
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