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denotes the greatest integer less than x. which of the

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Manager
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denotes the greatest integer less than x. which of the [#permalink]

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10 Mar 2008, 02:58
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[x] denotes the greatest integer less than x. which of the following is closest to is closest to x?
I. [x-1/2]
II. [x+1/2]
III. [2x]-[x]
Director
Joined: 05 Jan 2008
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10 Mar 2008, 03:04
Is it B [x+1/2]

[x] should be denoting x-1, as it is the greatest integer less than x
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10 Mar 2008, 06:49
az780 wrote:
[x] denotes the greatest integer less than x. which of the following is closest to is closest to x?
I. [x-1/2]
II. [x+1/2]
III. [2x]-[x]

III - i just drew a graph for x in [0,1)

I is way off, II is ok, III - better than II.
Re: PS (integers)   [#permalink] 10 Mar 2008, 06:49
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