if denotes the greatest integer les than or equal to x, is = : GMAT Data Sufficiency (DS)
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# if denotes the greatest integer les than or equal to x, is =

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SVP
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if denotes the greatest integer les than or equal to x, is = [#permalink]

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10 Aug 2009, 10:04
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71% (01:43) correct 29% (00:43) wrong based on 46 sessions

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if [x] denotes the greatest integer les than or equal to x, is [x] = 0?

1. 5x+1=3+2x
2. 0<x<1
Manager
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10 Aug 2009, 10:10
1) 5x + 1 = 3 + 2x
3x = 2
x = 2/3
so [x] = 0

2) 0 < x < 1
so [x] = 0

Each of the above statements are individually sufficient to answer. So answer is D
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11 Jul 2011, 15:48
Statement 1: x=2/3 --> [x] = 0 ==> SUFF.
Statement 2: 0<x<1 --> [x] = 0 ==> SUFF.

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13 Jul 2011, 04:55
Someone please expain the question ..did not really understand the question...
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14 Jul 2011, 04:20
was expecting it to be trickier. It would have been more tricky for any value of x<0.

Ans D. 00:43 sec.
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16 Jul 2011, 09:41
The only substance lies in this question is to rephrase
[x] = 0
into
x<0

& you have the answer & that is 'D'
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Re: Algebra   [#permalink] 16 Jul 2011, 09:41
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