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GMAT prep DS question

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Source: — Data Sufficiency |
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by gokulnath_h » Wed Jul 02, 2008 3:03 am
Hmm,


D = root of [(x2-x1)^2 + (y2-y1)^2]

= root of[(c-a)^2 + (d-b)^2]

= root of [ (-3)^2 + (-4)^2 ]
= root of [ 9 + 16 ]
= 25


hence 1 and 2 are required

ANS is D.

Please correct me if i am wrong.
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Sorry typo !!!!!

by gokulnath_h » Wed Jul 02, 2008 3:06 am
Hmm,


D = root of [(x2-x1)^2 + (y2-y1)^2]

= root of[(c-a)^2 + (d-b)^2]

= root of [ (-3)^2 + (-4)^2 ]
= root of [ 9 + 16 ]
= root of 25
= 5

hence 1 and 2 are required

ANS is D.

Please correct me if i am wrong
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Re: Sorry typo !!!!!

by beeparoo » Wed Jul 02, 2008 5:36 am
gokulnath_h wrote:hence 1 and 2 are required

ANS is D.

Please correct me if i am wrong
If both statements 1 & 2 are required to solve, then you mean to choose "C". Not "D".
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by cubicle_bound_misfit » Wed Jul 02, 2008 7:20 am
ID it E ? AS we will have +/- 5 as the answer ?

please let me know

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by iamabhisheksingh » Wed Jul 02, 2008 10:20 pm
Distance is always +ve. So the distance is 5.
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