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Interesting GMATFix Problem-6

by arora007 » Tue Sep 21, 2010 12:49 pm
A=35^x * 45^k * 80^2x. What is n?
1) k=1
2) root(k) = root((2+3k-n)/3)
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by kvcpk » Wed Sep 22, 2010 6:22 am
arora007 wrote:A=35^x * 45^k * 80^2x. What is n?
1) k=1
2) root(k) = root((2+3k-n)/3)
What is n???

Interesting I dont see n in the qn.

A=35^x * 45^k * 80^2x

1) k=1
A = 35^x * 45 * 80^2x
INSUFF

2) root(k) = root((2+3k-n)/3)
3k = 2+3k-n
n=2
SUFF

pick B.


I think the qn is missing something. Can you have a look at it Arora?
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don't be afraid of failure and don't abandon it.
People who work sincerely are the happiest."
Chanakya quotes (Indian politician, strategist and writer, 350 BC-275BC)
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by arora007 » Wed Sep 22, 2010 10:18 am
No the question is as it is...

yes..it was very strange... so strange that it took me by awe...

I squared root k and added a +/- sign on the RHS and rest is history.....should have kept my nerves on such questions...
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by kvcpk » Wed Sep 22, 2010 10:20 am
arora007 wrote:No the question is as it is...

yes..it was very strange... so strange that it took me by awe...

I squared root k and added a +/- sign on the RHS and rest is history.....should have kept my nerves on such questions...
is the OA B?
"Once you start working on something,
don't be afraid of failure and don't abandon it.
People who work sincerely are the happiest."
Chanakya quotes (Indian politician, strategist and writer, 350 BC-275BC)
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by arora007 » Wed Sep 22, 2010 10:23 am
OA indeed is B.
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by kvcpk » Wed Sep 22, 2010 10:27 am
arora007 wrote: I squared root k and added a +/- sign on the RHS and rest is history.....should have kept my nerves on such questions...
I was tempted to do this. But I plugged in the value of n back into stmt 2 and found that it results in no ambiguty.
root(k) = root(k).

So chose B.
"Once you start working on something,
don't be afraid of failure and don't abandon it.
People who work sincerely are the happiest."
Chanakya quotes (Indian politician, strategist and writer, 350 BC-275BC)
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