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prime

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Source: — Problem Solving |

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by Brent@GMATPrepNow » Wed Aug 15, 2012 6:21 am
rattan123 wrote:prove that for except n= 1 (n^4+4^n) is not a prime no..
What are the 5 answer choices that always accompany GMAT math questions? :-)

As you might imagine, questions involving proofs are not within the scope of the GMAT.
This looks like a question from a 1st- or 2nd-year Number Theory course.
I haven't attempted the proof, but my gut tells me you can prove this via induction.

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Brent
Brent Hanneson - Creator of GMATPrepNow.com
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