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If a pyramid has 5 vertices and 8 edges, how many faces does the pyram

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If a pyramid has 5 vertices and 8 edges, how many faces does the pyram  [#permalink]

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New post 24 Jan 2019, 05:23
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A
B
C
D
E

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  25% (medium)

Question Stats:

73% (00:45) correct 27% (00:58) wrong based on 48 sessions

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Re: If a pyramid has 5 vertices and 8 edges, how many faces does the pyram  [#permalink]

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New post 24 Jan 2019, 05:59
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Bunuel wrote:
If a pyramid has 5 vertices and 8 edges, how many faces does the pyramid have?

(A) 4
(B) 5
(C) 6
(D) 8
(E) 12



pyramid here would be havinh
5 vertices
8 edges
4 triangles
base a square
5 faces

IMO B
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Re: If a pyramid has 5 vertices and 8 edges, how many faces does the pyram  [#permalink]

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New post 24 Jan 2019, 07:00
1
Bunuel wrote:
If a pyramid has 5 vertices and 8 edges, how many faces does the pyramid have?

(A) 4
(B) 5
(C) 6
(D) 8
(E) 12


Pyramid here have -

5 vertices and 8 edges

Which is only possible in Pyramid of 4 triangles with a square base

Hence 4 sides of triangle + 1 side of Square = 5 faces

Option B.
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If a pyramid has 5 vertices and 8 edges, how many faces does the pyram  [#permalink]

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New post Updated on: 28 Jan 2019, 10:03
pyramid is a conical structure resting on a rectangular surface.
hence it should be 1 square surface at the bottom and 4 triangular surface on top of t.
Thus total 5 faces.

Originally posted by globaldesi on 24 Jan 2019, 10:23.
Last edited by globaldesi on 28 Jan 2019, 10:03, edited 1 time in total.
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Re: If a pyramid has 5 vertices and 8 edges, how many faces does the pyram  [#permalink]

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New post 27 Jan 2019, 23:33
globaldesi wrote:
pyramid is a conical structure resting on a rectangular surface.
hence it should be 1 rectangular surface at the bottom and 4 triangular surface on top of t.
Thus total 5 faces.


I believe base of pyramid must be square in above situation and not rectangular, could you please review and advise.
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Re: If a pyramid has 5 vertices and 8 edges, how many faces does the pyram  [#permalink]

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New post 28 Jan 2019, 10:02
Gmatprep550 wrote:
globaldesi wrote:
pyramid is a conical structure resting on a rectangular surface.
hence it should be 1 rectangular surface at the bottom and 4 triangular surface on top of t.
Thus total 5 faces.


I believe base of pyramid must be square in above situation and not rectangular, could you please review and advise.


yeah apologies it should be square.
Edited thank you
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Re: If a pyramid has 5 vertices and 8 edges, how many faces does the pyram   [#permalink] 28 Jan 2019, 10:02
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