inequalities

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beater: Master | Next Rank: 500 Posts; Posts: 301; Joined: Tue Apr 22, 2008 6:07 am; Thanked: 2 times

by beater » Tue Oct 07, 2008 12:04 pm

If x > 0, is x^2 < x ?
(1) 0.1 < x < 0.4
(2) x^3 < x^2

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Source: Beat The GMAT — Data Sufficiency | Tue Oct 07, 2008 12:04 pm

namitrajiv: Junior | Next Rank: 30 Posts; Posts: 25; Joined: Thu Oct 02, 2008 2:11 pm; Thanked: 3 times

by namitrajiv » Tue Oct 07, 2008 12:08 pm

D it is ,

we knw x >0 , thus x^2 will be less than x when 0<x<1

first statement says this only x is a fraction

2nd x^3 <x^2 , again this will happen only when x is a fraction
thus x^2 will be less than x

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