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Squareroot

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Sri
 Post subject: Squareroot
 Post Posted: Sun Jun 03, 2007 11:26 am 
sqrt(1919)
__________
sqrt(0.1919)


Answer: 100

Shouldn't the answer be 10,00, since I would square the whole fraction to remove square root?

Can't I square the whole fraction here?
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Sri
 Post subject:
 Post Posted: Sun Jun 03, 2007 11:27 am 
Sorry type in above post, answer I assume would be 10,000.
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esledge
 Post subject: Please post question source
 Post Posted: Tue Jun 05, 2007 5:07 pm 
Offline
ManhattanGMAT Staff


Posts: 901
Location: St. Louis, MO
Hi Sri,

To avoid any copyright issues, we must ask for the source (author) of the question before responding. Do you remember where you saw this one? Also, it would be best if you can provide the full text of the question, including answer choices if it was multiple choice, for the benefit of other forum users.

Thanks!

_________________
Emily Sledge
Instructor
ManhattanGMAT
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cindyqtran
 Post subject:
 Post Posted: Sat Jun 23, 2007 10:46 pm 
Sri,
You are correct.
sqrt(1919) 19190000
__________ = __________ = 10,000
sqrt(0.1919) 1919
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GMATPaduan
 Post subject: Question from OG - Quantitative Guide
 Post Posted: Mon Jun 25, 2007 11:21 am 
Please quote the number - I know it is from the Quantitative Guide, but I don't have it handy.

The below explains why the answer is 100.

sqrt(1919)
__________
sqrt(0.1919)

= sqrt (.1919)*10^4
________________
sqrt (.1919)

= .1919 cancels out, and you're left with the sqrt of 1 * 10^4;

sqrt of 10^4 = 10^2 = 100.
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