Problem on comparison

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Problem on comparison

by Pinku » Mon Jul 26, 2010 12:33 pm
Col A : +7
Col B : Square root (36+49)

a)The quantity on the left is greater
b)The quantity on the right is greater
c)Both are equal
d)The relationship cannot be determined without further information
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by selango » Mon Jul 26, 2010 5:52 pm
Pinku,

The questions posted by you are not GMAT questions.What is the source?
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by sanju09 » Tue Jul 27, 2010 1:12 am
Pinku wrote:Col A : +7
Col B : Square root (36+49)

a)The quantity on the left is greater
b)The quantity on the right is greater
c)Both are equal
d)The relationship cannot be determined without further information
This is a GRE Quantitative Comparison question, posted on a wrong forum. Anyways, the positive square root of 36 + 49 is greater than +7, but the negative square root is less.

Although, we are recommended to consider only the positive square root of a positive number x, in case it is emblematically written as √x, but when the same is written in words, like "Square root (36+49)" as presented by you in the column B, it creates doubt; hence make sure what prevented you use "√" in column B, is it the unavailability of it on the qwerty keys, or it was originally given like that. B is the answer in the former case, and D in the later case.
The mind is everything. What you think you become. -Lord Buddha



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