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If @x denotes the greatest integer that is less than

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If @x denotes the greatest integer that is less than [#permalink] New post 22 Oct 2010, 12:39
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If @x denotes the greatest integer that is less than or equal to x, then @ (-0.1) + @ (0.1) = ?
I have tried to solve it for several times but failed. Please help me.
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Re: math problem [#permalink] New post 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) = ?
I have tried to solve it for several times but failed. Please help me.



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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Re: math problem [#permalink] New post 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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Re: math problem [#permalink] New post 22 Oct 2010, 18:59
thanks a lot stanford. your answer is correct but please give me detail.
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Re: math problem [#permalink] New post 23 Oct 2010, 20:38
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munia123 wrote:
thanks a lot stanford. your answer is correct but please give me detail.


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

Hence answer = -1+0=-1

Hope this is clear.
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Re: math problem [#permalink] New post 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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Re: math problem [#permalink] New post 24 Oct 2010, 03:50
thanks utin. it is clear now.
Re: math problem   [#permalink] 24 Oct 2010, 03:50
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