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# What is the perimeter of a isosceles triangle MNP?

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Manager
Joined: 27 Feb 2010
Posts: 98
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What is the perimeter of a isosceles triangle MNP?  [#permalink]

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27 Apr 2010, 20:03
4
00:00

Difficulty:

25% (medium)

Question Stats:

73% (00:24) correct 27% (00:29) wrong based on 213 sessions

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What is the perimeter of a isosceles triangle MNP?

(1) MN = 16
(2) NP = 20

OPEN DISCUSSION OF THIS QUESTION IS HERE: http://gmatclub.com/forum/what-is-the-p ... 34505.html

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Manager
Joined: 01 Feb 2010
Posts: 241
Re: What is the perimeter of a isosceles triangle MNP?  [#permalink]

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27 Apr 2010, 21:16
zz0vlb wrote:
What is the perimeter of a isosceles triangle MNP?

(1) MN = 16
(2) NP = 20

Its E.
1: Not enough as other two side not known
2: Not enough as other two side not known
Combining: Still we do not know what is the length of third side 16 or 20 hence not enough.
Therefore E.
Whats the OA.
Senior Manager
Joined: 24 Jul 2009
Posts: 258
Re: What is the perimeter of a isosceles triangle MNP?  [#permalink]

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28 Apr 2010, 00:50
IMO E.

Both statements are not enough.
Math Expert
Joined: 02 Sep 2009
Posts: 47168
Re: What is the perimeter of a isosceles triangle MNP?  [#permalink]

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08 Dec 2014, 03:14
What is the perimeter of isosceles triangle MNP?

(1) MN = 16. We only know the length of one side. Not sufficient.
(2) NP = 20. We only know the length of one side. Not sufficient.

(1)+(2) If MN=MP=16 and NP=20 then the perimeter would be 16+16+20=52 but if MN=16 and NP=MP=20 then the perimeter would be 16+20+20=56. Not sufficient.

Similar question to practice: what-is-the-perimeter-of-isosceles-triangle-mnp-134505.html#p1096591

OPEN DISCUSSION OF THIS QUESTION IS HERE: what-is-the-perimeter-of-isosceles-triangle-mnp-134505.html
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Re: What is the perimeter of a isosceles triangle MNP?  [#permalink]

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15 Oct 2017, 02:02
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Re: What is the perimeter of a isosceles triangle MNP? &nbs [#permalink] 15 Oct 2017, 02:02
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