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m19#17

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m19#17 [#permalink] New post 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.
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Re: m19#17 [#permalink] New post 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.
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Re: m19#17 [#permalink] New post 16 Oct 2011, 10:41
Answer should be B -- as sqrt of P is an integer then P squre can not be prime number.
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Re: m19#17   [#permalink] 16 Oct 2011, 10:41
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