prime

Brent@GMATPrepNow: GMAT Instructor; Posts: 16207; Joined: Mon Dec 08, 2008 6:26 pm; Location: Vancouver, BC; Thanked: 5254 times; Followed by:1268 members; GMAT Score:770

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.

Cheers,
Brent

Brent Hanneson - Creator of GMATPrepNow.com

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