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n is an integer greater than zero

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n is an integer greater than zero [#permalink] New post 27 Nov 2017, 12:13
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65% (00:56) correct 34% (00:42) wrong based on 29 sessions
n is an integer greater than zero

Quantity A
Quantity B
The number of different prime factors of 9n
The number of different prime factors of 8n


A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
[Reveal] Spoiler: OA

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Last edited by Carcass on 11 Jun 2018, 08:55, edited 1 time in total.
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Re: n is an integer greater than zero [#permalink] New post 27 Nov 2017, 12:24
Expert's post
Explanation

Working smart on this kind of question: we do have 9n vs 8n, which means you do have at least on 3 on one side and at least one 2 on the other side. But no more than this.

if you look at n and use for instance 3, then we do have 3 and 3; 2 and 3. Hence, B is bigger.

If you consider 2, we do have 3 and 2, and 2 on the other side. A is greater.

D is the answer
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Re: n is an integer greater than zero [#permalink] New post 10 Jun 2018, 19:19
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Carcass wrote:
n is an integer greater than zero

Quantity A
Quantity B
The number of different prime factors of 9n
The number of different prime factors of 8n


A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.


Hello @carcass, please can you put the ABCD option in some of the questions you post? There are several questions you have posted that do not have the correct option. Is your answer correct is not a valid option for a standardized test, please.
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Re: n is an integer greater than zero [#permalink] New post 13 Jun 2018, 18:23
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n > o, integer
. n = 1 --> 9n = 9 = 3^2 --> Quantity A = 1
8n = 8 = 2^3 --> Quantity B = 1
--> A = B
. n = 2 --> 9n = 9*2 = 3^2*2 --> Quantity A = 2
8n = 8*2 = 2^4 --> Quantity B = 1
--> A > B

Key: D
Re: n is an integer greater than zero   [#permalink] 13 Jun 2018, 18:23
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n is an integer greater than zero

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