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# m19#17

Author Message
Intern
Joined: 23 Jun 2010
Posts: 9

Kudos [?]: 8 [0], given: 2

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15 Oct 2011, 00:59
Is $$p^2$$ a prime number?

1. $$p > 1$$
2. $$\sqrt{p}$$ is an integer

[Reveal] Spoiler:
OA: B

I got stumped by thinking 1 is prime. Shame.

Kudos [?]: 8 [0], given: 2

Manager
Joined: 21 Aug 2010
Posts: 186

Kudos [?]: 128 [0], given: 141

Location: United States
GMAT 1: 700 Q49 V35

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16 Oct 2011, 04:50
Ans:B

If Sqrt of P is integer then P^2 can't be prime.
_________________

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Last edited by g106 on 16 Oct 2011, 11:51, edited 1 time in total.

Kudos [?]: 128 [0], given: 141

Manager
Joined: 10 Jan 2011
Posts: 232

Kudos [?]: 80 [0], given: 25

Location: India
GMAT Date: 07-16-2012
GPA: 3.4
WE: Consulting (Consulting)

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16 Oct 2011, 11:41
Answer should be B -- as sqrt of P is an integer then P squre can not be prime number.
_________________

-------Analyze why option A in SC wrong-------

Kudos [?]: 80 [0], given: 25

Re: m19#17   [#permalink] 16 Oct 2011, 11:41
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# m19#17

Moderator: Bunuel

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