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If p and q are positive integers, what is the value of q?

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If p and q are positive integers, what is the value of q? [#permalink] New post 28 Jun 2012, 05:56
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E

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64% (01:35) correct 36% (00:29) wrong based on 50 sessions
If p and q are positive integers, what is the value of q?

(1) q^{p-1} = 1
(2) p = 1
[Reveal] Spoiler: OA

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Re: If p and q are positive integers, what is the value of q? [#permalink] New post 28 Jun 2012, 06:01
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If p and q are positive integers, what is the value of q?

(1) q^{p-1} = 1 --> if p=1 then q^{p-1}=q^0=1, which means that q could be ANY positive integer. Not sufficient.

(2) p = 1. Clearly insufficient as no info about q.

(1)+(2) Nothing new: p=1 so q^{p-1}=q^0=1, which means that q could be ANY positive integer. Not sufficient.

Answer: E.
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Re: If p and q are positive integers, what is the value of q?   [#permalink] 28 Jun 2012, 06:01
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