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There is something wrong in this question

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There is something wrong in this question [#permalink]

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New post 23 Nov 2011, 08:46
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00:00
A
B
C
D
E

Difficulty:

(N/A)

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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Re: There is something wrong in this question [#permalink]

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New post 23 Nov 2011, 09:39
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You are correct.

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

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

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