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m19#17

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Intern
Joined: 23 Jun 2010
Posts: 9

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

m19#17 [#permalink]

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14 Oct 2011, 23:59
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 [?]: 135 [0], given: 141

Location: United States
GMAT 1: 700 Q49 V35
Re: m19#17 [#permalink]

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16 Oct 2011, 03:50
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, 10:51, edited 1 time in total.

Kudos [?]: 135 [0], given: 141

Manager
Joined: 10 Jan 2011
Posts: 232

Kudos [?]: 83 [0], given: 25

Location: India
GMAT Date: 07-16-2012
GPA: 3.4
WE: Consulting (Consulting)
Re: m19#17 [#permalink]

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16 Oct 2011, 10:41
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 [?]: 83 [0], given: 25

Re: m19#17   [#permalink] 16 Oct 2011, 10:41
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m19#17

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