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In the figure above, x, y and z are the dimensions of the rectangular

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In the figure above, x, y and z are the dimensions of the rectangular [#permalink]

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New post 08 Dec 2017, 03:43
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In the figure above, x, y and z are the dimensions of the rectangular solid, and each of these dimensions is an integer greater than 1. Each of the following could be the volume of the rectangular solid except

(A) 8
(B) 12
(C) 24
(D) 27
(E) 69

Attachment:
2017-12-08_1440.png
2017-12-08_1440.png [ 11.78 KiB | Viewed 605 times ]

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Re: In the figure above, x, y and z are the dimensions of the rectangular [#permalink]

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New post 08 Dec 2017, 04:05
Bunuel wrote:
Image
In the figure above, x, y and z are the dimensions of the rectangular solid, and each of these dimensions is an integer greater than 1. Each of the following could be the volume of the rectangular solid except

(A) 8
(B) 12
(C) 24
(D) 27
(E) 69

Attachment:
2017-12-08_1440.png



(A) 8 = 2*2*2
(B) 12 =2*2*3
(C) 24 = 2*4*3
(D) 27 = 3*3*3
(E) 69 = 3* 13 * 1..not possible

E
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Re: In the figure above, x, y and z are the dimensions of the rectangular [#permalink]

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New post 08 Dec 2017, 07:47
Bunuel wrote:
Image
In the figure above, x, y and z are the dimensions of the rectangular solid, and each of these dimensions is an integer greater than 1. Each of the following could be the volume of the rectangular solid except

(A) 8
(B) 12
(C) 24
(D) 27
(E) 69

Attachment:
2017-12-08_1440.png



Among the choices only "69" can't be factored into three integers , each factor greater than One to fit the volume of rectangular solid (V = h * w * d)
So, Answer is E
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Re: In the figure above, x, y and z are the dimensions of the rectangular [#permalink]

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New post 26 Feb 2018, 00:12
Sorry if this is a silly question, isn't a cube different from a rectangular solid?
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Re: In the figure above, x, y and z are the dimensions of the rectangular [#permalink]

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New post 26 Feb 2018, 00:16
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In the figure above, x, y and z are the dimensions of the rectangular [#permalink]

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New post 26 Feb 2018, 00:21
Split the answer options using the prime factorization method, but stop once you can split into 3 smaller factors to save time. The answer choice that is unable to give you 3 number of factors (excluding 1 & itself) is the answer.

A) 8 = 4*2 = 2*2*2 (ok)
B) 12 = 2*6 = 2*2*3 (ok)
C) 24 = 2*12 = 2*2*6 (ok)
D) 27 = 3*9 = 3*3*3 (ok)
E) 69 = 3*23

As 23 is a prime number and cannot be further split other than 1 and itself, E is the answer.
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Re: In the figure above, x, y and z are the dimensions of the rectangular [#permalink]

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New post 26 Feb 2018, 00:36
Bunuel wrote:
minatminat wrote:
Sorry if this is a silly question, isn't a cube different from a rectangular solid?


All cubes are rectangular solids but not vise-versa.


Thanks so much for replying me!!
Re: In the figure above, x, y and z are the dimensions of the rectangular   [#permalink] 26 Feb 2018, 00:36
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In the figure above, x, y and z are the dimensions of the rectangular

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