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Source: — Data Sufficiency |
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by selango » Mon Sep 13, 2010 8:30 am
A quadrilateral is parallelogram if,

1.It has 2 pairs of ||el sides

2.It has 2 pairs of opposite sides if equal lengths

3.It has one pair of opposite side which are parallel and equal length.

stmt1,

PS||QR and PS=QR. PQRS is parallelogram

Suff

stmt2,

PQ=RS.We don't know if this 2 sides are parallel or we don't know another pair of opposite side is equal..

Insuff

Pick A
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by beatthegmatinsept » Mon Sep 13, 2010 8:31 am
Glad you posted this problem. I got this one in the practice test this weekend and am not very convinced with the OA. Hopefully we see some smart ways to solve this problem.
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by adi_800 » Mon Sep 13, 2010 9:44 am
beatthegmatinsept wrote:Glad you posted this problem. I got this one in the practice test this weekend and am not very convinced with the OA. Hopefully we see some smart ways to solve this problem.
How much you got buddy??
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by adi_800 » Mon Sep 13, 2010 9:47 am
From statement 1, you can come to know that one pair of opposite sides parallel n congruent..
But as per ||gram definitn, you need to have two pairs of sides equal and parallel..
Selango,
Can you explain a bit more...
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by beatthegmatinsept » Mon Sep 13, 2010 9:53 am
adi_800 wrote:
beatthegmatinsept wrote:Glad you posted this problem. I got this one in the practice test this weekend and am not very convinced with the OA. Hopefully we see some smart ways to solve this problem.
How much you got buddy??
46 on Quant, 30 on Verbal. This was saturday when I took MGMAT test.
Then took GMAT Prep on Sunday. 44 Q, 32 V. Total score stayed the same.

What about you?
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by beatthegmatinsept » Mon Sep 13, 2010 9:54 am
adi_800 wrote:From statement 1, you can come to know that one pair of opposite sides parallel n congruent..
But as per ||gram definitn, you need to have two pairs of sides equal and parallel..
Selango,
Can you explain a bit more...
I had the exact same reason for not picking A. I ended up picking E, cuz we still don't know if the equal side are parallel to each other or not.
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by selango » Mon Sep 13, 2010 9:59 am
adi_800 wrote:From statement 1, you can come to know that one pair of opposite sides parallel n congruent..
But as per ||gram definitn, you need to have two pairs of sides equal and parallel..
Selango,
Can you explain a bit more...

Even if one pair of side equal and parallel,then it is parallelogaram.Check the below link.

https://www.ies.co.jp/math/products/geo1 ... /para.html
--Anand--
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by beatthegmatinsept » Mon Sep 13, 2010 10:01 am
selango wrote:
adi_800 wrote:From statement 1, you can come to know that one pair of opposite sides parallel n congruent..
But as per ||gram definitn, you need to have two pairs of sides equal and parallel..
Selango,
Can you explain a bit more...

Even if one pair of side equal and parallel,then it is parallelogaram.Check the below link.

https://www.ies.co.jp/math/products/geo1 ... /para.html
Interesting link. So per condition 5, a is enough. That helps. Thanks! :)
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