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# GmatPrep weird ques..

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Manager
Joined: 14 May 2007
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GmatPrep weird ques.. [#permalink]  11 Jun 2008, 07:30
Hello Everyone,

I gave GMAT Prep practice Test 1 and encountered 2 questions that seem weird. The first one seems wrong, I mean i couldnt solve it. And second one has answer that can't be right.

Can you guys have a look and let me know whats going on ? Check Image below -

Thanks,

GR
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Director
Joined: 23 Sep 2007
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Re: GmatPrep weird ques.. [#permalink]  11 Jun 2008, 07:44
Question 1 is a known error that just got introduced into the new version of the gmatprep, many people have seen this.

Question 2 seems to be an error too, but you are probally the first person to report it.
SVP
Joined: 30 Apr 2008
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Re: GmatPrep weird ques.. [#permalink]  11 Jun 2008, 07:50
As to the first one, I totally agree with you. I just picked some numbers for x and y that the product of those numbers is 1. Easiest example is x = 1, y = 1.

Result is $$\frac{8}{0}$$

If I use x = 2, y = $$\frac{1}{2}$$ because 2 * 1/2 = 1 I get the result of

$$\frac{25}{9}$$

$$\frac{2(2+\frac{1}{2})^2}{2(2-\frac{1}{2})^2}$$ = $$\frac{2(\frac{5}{2})^2}{2(\frac{3}{2})^2}$$ = $$\frac{2(\frac{25}{4})}{2(\frac{9}{4})}$$ = $$\frac{\frac{50}{4}}{\frac{18}{4}}$$ = $$\frac{50}{4} * \frac{4}{18}$$ = $$\frac{50}{18}$$ = $$\frac{25}{9}$$
_________________

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J Allen Morris
**I'm pretty sure I'm right, but then again, I'm just a guy with his head up his a.

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Director
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Re: GmatPrep weird ques.. [#permalink]  11 Jun 2008, 07:54
The answer for question 2 should be D

statement 1: n = 2 ---> 3^(10) / 10 remainder is 9

statement 2: n can be any positive integer, and the remainder would still be 9
Manager
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Re: GmatPrep weird ques.. [#permalink]  11 Jun 2008, 09:29
Thanks a lot guys for letting me know that its a software error (introduced with latest version).
Senior Manager
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Re: GmatPrep weird ques.. [#permalink]  11 Jun 2008, 23:31
gmatnub wrote:
The answer for question 2 should be D

statement 1: n = 2 ---> 3^(10) / 10 remainder is 9

statement 2: n can be any positive integer, and the remainder would still be 9

ok can i please know why u say that statement 2 is sufficent

the question stem does not define what n is (and it also does not talk abt what m is)

so why do u say that statement 2 is sufficent

therefore i think
statement 1 is sufficent

thanks
_________________

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Re: GmatPrep weird ques..   [#permalink] 11 Jun 2008, 23:31
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# GmatPrep weird ques..

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