If @x denotes the greatest integer that is less than : GMAT Data Sufficiency (DS)
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# If @x denotes the greatest integer that is less than

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Intern
Joined: 22 Oct 2010
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If @x denotes the greatest integer that is less than [#permalink]

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22 Oct 2010, 12:39
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50% (00:00) correct 50% (01:09) wrong based on 2 sessions

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If @x denotes the greatest integer that is less than or equal to x, then @ (-0.1) + @ (0.1) = ?
[Reveal] Spoiler: OA
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22 Oct 2010, 12:46
munia123 wrote:
Hey guys, i have got a math problem. The problem is,
If @x denotes the greatest integer that is less than or equal to x, then @ (-0.1) + @ (0.1) = ?

Hi!
Welcome on board!

Good question, but could you please post some answer choices? We do not know what is hidden behind the answer B.
thanks
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Audaces fortuna juvat!

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Manager
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22 Oct 2010, 12:49
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It would help if you provided answer choices. According to the definition given...

@ (-0.1) = -1

@ (0.1) = 0

Thus, @ (-0.1) + @ (0.1) = -1 + 0 = -1
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22 Oct 2010, 18:59
Manager
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23 Oct 2010, 20:38
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munia123 wrote:

draw on number line for ease.
greatest integer number that is less than or equal to -0.1 is -1
also greatest integer number that is less than or equal to 0.1=0

Hope this is clear.
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24 Oct 2010, 01:19
and please change the topic of your post! Make it something unique. We all guessed that it is a math question since its in the DS forum

Thank you and All the best.
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24 Oct 2010, 03:50
thanks utin. it is clear now.
Re: math problem   [#permalink] 24 Oct 2010, 03:50
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