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If x is not zero, then /x = ? 1) -1 2) 0 3) 1 4) x 5) lxl/x

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Intern
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Joined: 09 Jun 2007
Posts: 35
If x is not zero, then /x = ? 1) -1 2) 0 3) 1 4) x 5) lxl/x  [#permalink]

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New post 04 Jun 2008, 17:49
1
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions

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If x is not zero, then [SQRT(x^2)]/x = ?
1) -1
2) 0
3) 1
4) x
5) lxl/x

Would you explain this question please? I will post the OA shortly. Thank you!

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Director
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Joined: 23 Sep 2007
Posts: 749
Re: gmatprep #1 DS  [#permalink]

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New post 04 Jun 2008, 17:55
this is a trick question to trick you into picking choice 3

if x = -1

then substitute -1 into the equation and the result will be 1/(-1)

which you can reason to be |x|/x
Director
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Posts: 640
Re: gmatprep #1 DS  [#permalink]

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New post 04 Jun 2008, 23:21
sqrt of X^2 is +- x thus

+- x/x would be +- 1 thus E

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Re: If x is not zero, then /x = ? 1) -1 2) 0 3) 1 4) x 5) lxl/x  [#permalink]

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New post 26 Sep 2018, 02:14
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Re: If x is not zero, then /x = ? 1) -1 2) 0 3) 1 4) x 5) lxl/x &nbs [#permalink] 26 Sep 2018, 02:14
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