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What is the perimeter of a isosceles triangle MNP?

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What is the perimeter of a isosceles triangle MNP? [#permalink] New post 27 Apr 2010, 19:03
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64% (01:23) correct 36% (00:20) wrong based on 40 sessions
What is the perimeter of a isosceles triangle MNP?

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

OPEN DISCUSSION OF THIS QUESTION IS HERE: what-is-the-perimeter-of-isosceles-triangle-mnp-134505.html
[Reveal] Spoiler: OA
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Re: What is the perimeter of a isosceles triangle MNP? [#permalink] New post 27 Apr 2010, 20:16
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.
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Re: What is the perimeter of a isosceles triangle MNP? [#permalink] New post 27 Apr 2010, 23:50
IMO E.

Both statements are not enough.
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Re: What is the perimeter of a isosceles triangle MNP? [#permalink] New post 07 Dec 2014, 12:26
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Re: What is the perimeter of a isosceles triangle MNP? [#permalink] New post 08 Dec 2014, 02:14
Expert's post
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.

Answer: E.

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] 08 Dec 2014, 02:14
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