If I am not missing something
1) (n^3)(1-(x^2)) < 0
if n>0
(1-(x^2)) < 0
x^2>1
x can be positive or negative
or
n<0
(1-(x^2))>0
x^2<1
-1<x<1
x can be positive or negative
INSUFF
2) (x^2)-1 < 0
x^2<1
-1<x<1
x can be positive or negative
INSUFF
(1) and (2)
x^2<1
-1<x<1
x can be positive or negative
INSUFF
Answer E
OA please
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Is x negative
Source: Beat The GMAT — Data Sufficiency |
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jackcrystal
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Are you sure statement 1 is typed out correctly? Should it not be x^3 instead of n^3?Is x negative?
1) (n^3)(1-(x^2)) < 0
2) (x^2)-1 < 0
I remember seeing this problem somewhere...OG11 perhaps?
BlueMentor
