Is |n|

Question

Is |n| < 1 ? 
(1) n^x - n < 0 
(2) x^(-1) = -2

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GMATinsight · Answer

Follow the color coding for checking which option is ruled out sequentially after having used informations in statements

Answer: Option C

ajaykv · Answer

please give OE GMATinsight

GMATinsight · Answer

ajaykv  It is already posted above...

Archit3110 · Answer

Is |n| < 1 ? 
(1) n^x - n < 0 
(2) x^(-1) = -2

stmnt 1: 
for values n=2 and n=1/2 we get yes and no

stmnt 2:
x^(-1) = -2
x=-1/2

since n relation not given so insufficient..

Combining 1 & 2 
we can say 1/(n)^1/2<n
or 1<n* n^(1/2)-- (a)

for all values of (a) n has to be a an integer value and >1 hence the question stem "|n| < 1"would always stand to be NO , option C is sufficient..

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Is |n| < 1 ? (1) n^x - n < 0 (2) x^(-1) = -2

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