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There is something wrong in this question

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Retired Moderator
Status: 2000 posts! I don't know whether I should feel great or sad about it! LOL
Joined: 04 Oct 2009
Posts: 1628

Kudos [?]: 1121 [1], given: 109

Location: Peru
Schools: Harvard, Stanford, Wharton, MIT & HKS (Government)
WE 1: Economic research
WE 2: Banking
WE 3: Government: Foreign Trade and SMEs
There is something wrong in this question [#permalink]

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23 Nov 2011, 08:46
1
KUDOS
00:00

Difficulty:

(N/A)

Question Stats:

63% (00:51) correct 38% (02:20) wrong based on 11 sessions

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I think that the OA is wrong in this question. What do you think?

Is the two-digit prime number $$p$$ equal to 17 ?
(1) $$p^2$$ is greater than 250
(2) $$p = n^2 + 1$$, where n is an integer.

OE
[Reveal] Spoiler:
The OA is B. The OE mentions that the only two-digit prime that is one larger than a square is 17. But, what about 37?
37 is a prime number, and $$37 = 6^2 +1$$.
By the way, is there a faster way to solve this question than picking numbers?

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Kudos [?]: 1121 [1], given: 109

Manager
Joined: 29 Oct 2011
Posts: 180

Kudos [?]: 161 [1], given: 19

Concentration: General Management, Technology
Schools: Sloan '16 (D)
GMAT 1: 760 Q49 V44
GPA: 3.76
Re: There is something wrong in this question [#permalink]

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23 Nov 2011, 09:39
1
KUDOS
You are correct.

(1) says that p > 15
(2) p can be 17 or 37 at the least

Kudos [?]: 161 [1], given: 19

Re: There is something wrong in this question   [#permalink] 23 Nov 2011, 09:39
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