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# Is the prime number p equal to 3

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Intern
Joined: 18 Apr 2011
Posts: 47
Location: United States
WE: Information Technology (Computer Software)
Is the prime number p equal to 3 [#permalink]

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11 Nov 2012, 08:56
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Difficulty:

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Question Stats:

50% (01:38) correct 50% (00:29) wrong based on 82 sessions

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Is the prime number p equal to 3 ?

(1) p = n + 1, where n is a prime number.
(2) p is divisible by 3.

Why is it
[Reveal] Spoiler:
D
and not C?
[Reveal] Spoiler: OA
Math Expert
Joined: 02 Sep 2009
Posts: 39672
Re: Is the prime number p equal to 3 [#permalink]

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11 Nov 2012, 09:02
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Is the prime number p equal to 3 ?

(1) p = n + 1, where n is a prime number. This statement implies that n and p are consecutive numbers and both are primes (also one is even and another odd). The only such pair is 2 and 3. Sufficient.

(2) p is divisible by 3. This statement directly says that p is 3 (which other prime can be divisible by 3?). Sufficient.

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Intern
Joined: 18 Apr 2011
Posts: 47
Location: United States
WE: Information Technology (Computer Software)
Re: Is the prime number p equal to 3 [#permalink]

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13 Nov 2012, 08:05
Bunuel wrote:
Is the prime number p equal to 3 ?

(1) p = n + 1, where n is a prime number. This statement implies that n and p are consecutive numbers and both are primes (also one is even and another odd). The only such pair is 2 and 3. Sufficient.

(2) p is divisible by 3. This statement directly says that p is 3 (which other prime can be divisible by 3?). Sufficient.

Thanks man, silly of me to ignore that point
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Joined: 09 Sep 2013
Posts: 15966
Re: Is the prime number p equal to 3 [#permalink]

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24 Apr 2015, 16:17
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: Is the prime number p equal to 3   [#permalink] 24 Apr 2015, 16:17
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