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Source: — Data Sufficiency |
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Re: inequalities

by Morgoth » Thu Oct 02, 2008 3:45 pm
beater wrote:If x > 0, is x^2 < x ?
(1) 0.1 < x < 0.4
(2) x^3 < x^2
Statement (1)
0.1 < x < 0.4
If fractions are taken
x^2 will always be less than x. Sufficient.

Statement (2)
if x>0
only way x^3 < x^2 is when 0<x<1
therefore, x^2<x. Sufficient.

Thus, D.

OA?
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by beater » Thu Oct 02, 2008 8:51 pm
OA - D. Thanks!
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