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If n is a positive integer, is n equal to 6?

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If n is a positive integer, is n equal to 6?  [#permalink]

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New post 15 Jan 2017, 07:54
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A
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E

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  35% (medium)

Question Stats:

75% (01:08) correct 25% (01:01) wrong based on 50 sessions

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If n is a positive integer, is n equal to 6?

(1) \(n^2\) + 1 is a prime number.

(2) n > 2

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Re: If n is a positive integer, is n equal to 6?  [#permalink]

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New post 15 Jan 2017, 08:43
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Re: If n is a positive integer, is n equal to 6?  [#permalink]

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New post 07 Sep 2017, 01:24
n is a positive integer, n= 6?

(1) n^2 + 1 is a prime number.
n=1 => 2 prime
n=2 =>5 prime
n=4 => 17 prime
n=6 => 37 prime
Not sufficient

(2) n > 2
Not sufficient .. n can be anything >2

1+2
if n> 2.. by 1 we can clearly see that we know 2 values of n=> 4 or 6
So not sufficient

Answer: E
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Re: If n is a positive integer, is n equal to 6?   [#permalink] 07 Sep 2017, 01:24
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If n is a positive integer, is n equal to 6?

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