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436 Amazing GMAT Data Sufficiency Questions with Answers

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436 Amazing GMAT Data Sufficiency Questions with Answers [#permalink] New post 29 Nov 2012, 07:29
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This is a pure gold collection. 2 pdf contains 436, 500-800 level data sufficiency problems.

My other top quality collection - must download

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Last edited by problogger99 on 10 Dec 2012, 06:42, edited 4 times in total.
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Re: 436 Amazing GMAT Data Sufficiency Questions with Answers [#permalink] New post 29 Nov 2012, 07:30
the source ?? give me info please about these PDF

Thanks
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Re: 436 Amazing GMAT Data Sufficiency Questions with Answers [#permalink] New post 29 Nov 2012, 07:40
yes source please.

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Re: 436 Amazing GMAT Data Sufficiency Questions with Answers [#permalink] New post 29 Nov 2012, 08:59
These are gmat prep questions unless he's mixed some questions from other sources. I've seen someone made a similar post before...
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Re: 436 Amazing GMAT Data Sufficiency Questions with Answers [#permalink] New post 29 Nov 2012, 16:56
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Every single question in these two documents is from the Official GMATPrep Test database. These are clearly the best source of questions after the Official Guides. Just make sure you do these after you have taken the two Official Practice Tests in the GMATPrep software.

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Re: 436 Amazing GMAT Data Sufficiency Questions with Answers [#permalink] New post 29 Nov 2012, 17:30
dabral wrote:
Every single question in these two documents is from the Official GMATPrep Test database. These are clearly the best source of questions after the Official Guides. Just make sure you do these after you have taken the two Official Practice Tests in the GMATPrep software.

Dabral



Ok but what about for instance the 5 question of the second dcument ??

Quote:
5. 354-!-item-!-187;#058&000214
If x, y, and z are integers, is x + y + 2z even?

(1) x + z is even.

(2) y + z is even.


This doesn't make much sense .....................
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Re: 436 Amazing GMAT Data Sufficiency Questions with Answers [#permalink] New post 29 Nov 2012, 17:45
carcass,

Why? It is exactly the same as the question in the GMATPrep software. Is it because of the 2z there, because we know 2z is always even, so why did they put it there?

The question is really equivalent to Is x+y even?
Here each statement alone is insufficient.

1) x = 3, z = 3, y = 4 Answer is No
x = 2, z = 2, y = 4 Answer is Yes.
Insufficient.

same logic for statement 2 as well.

Now when we combine the two statements, do you see a clean way to do it that involves a simple step.
No paper or pencil required.

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Dabral
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Re: 436 Amazing GMAT Data Sufficiency Questions with Answers   [#permalink] 29 Nov 2012, 17:45
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