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There is something wrong in this question

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Kudos [?]: 823 [1] , given: 109

There is something wrong in this question [#permalink]

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23 Nov 2011, 08:46
1
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Difficulty:

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Question Stats:

63% (01:51) 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 [?]: 129 [1] , given: 19

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

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