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Find an integer n?

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Find an integer n? [#permalink]

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Find an integer n?

(1) |n|^|n| = 4

(2) n^4 = 16
[Reveal] Spoiler: OA

Kudos [?]: 303 [1], given: 0

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Re: Find an integer n? [#permalink]

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New post 16 Aug 2010, 08:13
I don't understand... why couldn't it be A?

1) Sufficient?
2^2 = 4.
-2^-2 = 1/2*1/2 = 1/4.

2) Insufficient. It could be 2 or -2.

Please elaborate. Thanks!

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Re: Find an integer n? [#permalink]

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New post 16 Aug 2010, 09:55
gadean18 wrote:
I don't understand... why couldn't it be A?

1) Sufficient?
2^2 = 4.
-2^-2 = 1/2*1/2 = 1/4.

2) Insufficient. It could be 2 or -2.

Please elaborate. Thanks!


I thin it's \(|n|^{|n|}=4\)

Find an integer N.

(1) \(|n|^{|n|}=4\) --> \(n=2\) or \(n=-2\). Not sufficient.

(2) \(n^4=16\) --> \(n=2\) or \(n=-2\). Not sufficient.

(1)+(2) Still the same two values of \(n\) are possible. Not sufficient.

Answer: E.
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Re: Find an integer n? [#permalink]

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New post 14 Aug 2017, 04:14
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Re: Find an integer n?   [#permalink] 14 Aug 2017, 04:14
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