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by aatech » Sat May 24, 2008 6:26 pm
If xy=1, what is the value of [2(x+y)^2]/[2(x-y)^2]

2, 4, 8, 16, 32
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by VP_Jim » Sat May 24, 2008 7:11 pm
Hi aatech,

I've run across this question before; the equation is incorrect. It should be:

[2^(x+y)^2]/[2^(x-y)^2]

Try solving it this way, and reply again if you're still stuck.
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by aatech » Sat May 24, 2008 7:26 pm
Interesting.... I stumbled across this one in the GMAT Prep exam.....

Let me solve as you suggested..... Will let you know...
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by aatech » Sat May 24, 2008 7:38 pm
VP_Jim wrote:Hi aatech,

I've run across this question before; the equation is incorrect. It should be:

[2^(x+y)^2]/[2^(x-y)^2]

Try solving it this way, and reply again if you're still stuck.


Agree, the question should be as you suggested and it is easily solvable.. Ans is 16...

Wondering, how come GMAT prep s/w has incorrect questions. Its not really reliable then. Hope the real exam is not like this..
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by VP_Jim » Sat May 24, 2008 9:11 pm
I hope I can safely say that the real exam won't have typos... !
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by simplyjat » Sun May 25, 2008 11:08 pm
Basically the problem is with java version installed on the system. If the latest Java version is installed on the computer, the question is properly formatted.
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