Is quadrilateral MNOP a square? : GMAT Data Sufficiency (DS)
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17 Jan 2013, 04:53
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(1) MN = NO = OP
(2) Angle N and angle O are right angles
[Reveal] Spoiler: OA

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17 Jan 2013, 06:41
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fozzzy wrote:
highdiving wrote:

(1) MN = NO = OP
(2) Angle N and angle O are right angles

This one looks so easy you might think there is a trap; definitely C.

So true, I was wondering what would the diagram look like for statement 1...

For (1) MNOP may or may not be a square as shown below:
Attachment:

Untitled.png [ 3.79 KiB | Viewed 5393 times ]
Hope it helps
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17 Jan 2013, 05:04
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This one looks so easy you might think there is a trap; definitely C.
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17 Jan 2013, 06:49
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It does help, thank you; Visual aids like this one will be very helpful under stressful and timed conditions when one might momentarily confuse a general quadrilateral with a square specifically. Remembering this drawings will definitely help!
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11 Aug 2014, 04:04
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St1: Just two of the many different possibilities are : Rhombus and Square. Insuff
St2: Just two of the many different possibilities are : Rectangle and Square. Insuff

St1+St2: It could only be square
Ans: C
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05 Jul 2015, 07:16
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raviraaj wrote:
Found this question interesting cause my mind wanted to complicate it...Might sound dumb but is it a given in Math to assume that MNOP is in order? Wouldn't it change things if M and N were on a diagonal?

OFFICIAL GUIDE:

Problem Solving
Figures: All figures accompanying problem solving questions are intended to provide information useful in solving the problems. Figures are drawn as accurately as possible. Exceptions will be clearly noted. Lines shown as straight are straight, and lines that appear jagged are also straight. The positions of points, angles, regions, etc., exist in the order shown, and angle measures are greater than zero. All figures lie in a plane unless otherwise indicated.

Data Sufficiency:
Figures:
• Figures conform to the information given in the question, but will not necessarily conform to the additional information given in statements (1) and (2).
• Lines shown as straight are straight, and lines that appear jagged are also straight.
• The positions of points, angles, regions, etc., exist in the order shown, and angle measures are greater than zero.
• All figures lie in a plane unless otherwise indicated.

Hope it helps.
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17 Jan 2013, 05:23
highdiving wrote:
This one looks so easy you might think there is a trap; definitely C.

So true, I was wondering what would the diagram look like for statement 1...
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12 Jan 2014, 05:19
fozzzy wrote:

(1) MN = NO = OP
(2) Angle N and angle O are right angles

Stupid, annoying question (sorry, I just had to vent):

1) tells us the lengths of three sides but this theoretically still could leave us with a fourth side that is longer/shorter than the rest, so insufficient

2) Tells us that our quadrilateral is either a rectangle or a square, insufficient.

1 + 2 tell us that our quadrilateral is a square, because 2) restricts the possible shapes that 1) can take, and combining the two tells us how long the fourth side in 1) is, so sufficient.

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05 Jul 2015, 05:56
Found this question interesting cause my mind wanted to complicate it...Might sound dumb but is it a given in Math to assume that MNOP is in order? Wouldn't it change things if M and N were on a diagonal?
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05 Jul 2015, 06:08
raviraaj wrote:
Found this question interesting cause my mind wanted to complicate it...Might sound dumb but is it a given in Math to assume that MNOP is in order? Wouldn't it change things if M and N were on a diagonal?

Hi
yes, the alphabets give us the order of vertices
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05 Jul 2015, 06:08
raviraaj wrote:
Found this question interesting cause my mind wanted to complicate it...Might sound dumb but is it a given in Math to assume that MNOP is in order? Wouldn't it change things if M and N were on a diagonal?

Hi raviraaj,

We always read the vertices in the order (Clockwise or Anticlockwise) of their placements and don't consider them random vertices.

... And no question is dumb question it's more of exposure and less of competence that makes a difference among the level the questions test takers ask. SO don't be shy in asking any question however dumb you feel about that question.
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