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

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Is |n| < 1 ? (1) n^x - n < 0 (2) x^(-1) = -2  [#permalink]

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New post 12 Nov 2015, 08:55
2
7
00:00
A
B
C
D
E

Difficulty:

  65% (hard)

Question Stats:

63% (02:20) correct 37% (02:07) wrong based on 180 sessions

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

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Re: Is |n| < 1 ? (1) n^x - n < 0 (2) x^(-1) = -2  [#permalink]

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New post 12 Nov 2015, 08:57
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GMATinsight wrote:
Is |n| < 1 ?
(1) n^x - n < 0
(2) x^(-1) = -2

http://www.GMATinsight.com


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

Answer: Option C
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Re: Is |n| < 1 ? (1) n^x - n < 0 (2) x^(-1) = -2  [#permalink]

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New post 02 Nov 2018, 08:24
please give OE GMATinsight
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Re: Is |n| < 1 ? (1) n^x - n < 0 (2) x^(-1) = -2  [#permalink]

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New post 02 Nov 2018, 10:44
ajaykv wrote:
please give OE GMATinsight


ajaykv It is already posted above...
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Re: Is |n| < 1 ? (1) n^x - n < 0 (2) x^(-1) = -2  [#permalink]

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New post 02 Nov 2018, 11:15
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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Re: Is |n| < 1 ? (1) n^x - n < 0 (2) x^(-1) = -2   [#permalink] 02 Nov 2018, 11:15
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