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This one is very nice, try to do it data sufficiency is x^2

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Manager
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This one is very nice, try to do it data sufficiency is x^2 [#permalink]

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New post 23 Jun 2003, 07:03
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

This one is very nice, try to do it :lol:

data sufficiency

is x^2 - 4x + 3 < 0 ?

1. x^2 - 3x + 2 < 0
2. x^2 < 4
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New post 24 Jun 2003, 23:47
X^2-4X+3<0 answer is (1, 3)

(1) X^2-3x+2<0 ans (1, 2) OK
(2) X=(-2, 2) not OK

Thus, A

Last edited by stolyar on 25 Jun 2003, 00:17, edited 1 time in total.
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New post 24 Jun 2003, 23:49
Expert's post
stolyar wrote:
X^2-4X+3<0 answer is (1, 3)

(1) X^2-3x+2=0 ans (1, 2) OK
(2) X=(-2, 2) not OK

Thus, A



Back to life? I guess the problem is solved. Good. Sorry for inconvenience.
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New post 12 Aug 2006, 21:31
(x-2)(x+1)<0
x<2 or x<-1

(x-3)(x+1)
x<3 or x<-1
??

a is sufficient

b states that x^2<4
x<2 but nothing about x<-1
Insufficient.
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New post 13 Aug 2006, 01:29
A

x^2 - 4x + 3 < 0
i.e (x-3) (x-1) <0???
for this to be true 1<x<3 must be true.

St1: x^2 - 3x + 2 < 0
i.e (x-2)(x-1) < 0 means 1<x<2: SUFF

St2: x^2 < 4 means -2<x<2: INSUFF
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Re: data suf.1 [#permalink]

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New post 13 Aug 2006, 17:11
MBA04 wrote:
This one is very nice, try to do it :lol:

data sufficiency

is x^2 - 4x + 3 < 0 ?

1. x^2 - 3x + 2 < 0
2. x^2 < 4


is x^2 - 4x + 3 < 0 ?
is (x-3)(x-1) < 0
is 1<x<3

(1 ) x^2 - 3x + 2 < 0
(x-2)(x-1) < 0
1<x<2 Suff
AD

(2) x^2 < 4
-2 <x<2 Insuff

Hence A

Heman
Re: data suf.1   [#permalink] 13 Aug 2006, 17:11
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This one is very nice, try to do it data sufficiency is x^2

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