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]

22 Oct 2010, 13:39

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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]

22 Oct 2010, 13:46

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]

22 Oct 2010, 13:49

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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]

22 Oct 2010, 19:59

thanks a lot stanford. your answer is correct but please give me detail.

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Re: math problem [#permalink]

23 Oct 2010, 21:38

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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]

24 Oct 2010, 02:19

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]

24 Oct 2010, 04:50

thanks utin. it is clear now.

Re: math problem [#permalink] 24 Oct 2010, 04:50

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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

If @x denotes the greatest integer that is less than

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