All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars    
perplexus dot info

Home > Numbers > Sequences
Fibo composes (Posted on 2010-07-21) Difficulty: 4 of 5
Fibonacci sequence is defined by f(1)=1,f(2)=1 and f(m) =f(m-1)+f(m-2) i.e. 1, 1, 2, 3, 5, 8, 13, ...
Prove that for all composite values of n>4, f(n) is composite.

No Solution Yet Submitted by Ady TZIDON    
Rating: 3.6667 (3 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re: Fibs and primes PRIVATE REMARKS | Comment 4 of 6 |
(In reply to Fibs and primes by broll)

1. Since your Email address is hidden I use this channel
to convey  some advice. Hope you don't mind.

2.  Reasoning OK, but for the sake of claritu  leave 
   paragraph 4.  with a. and b. only ,  so that 4c  will be par. 5.

3. Add paragraph 6., starting with : So we have proven ...etc

4. If you EDIT more than once , you may erase the previous remarks like "Edited..bla bla.." and leave only the last one.


  Posted by Ady TZIDON on 2010-07-22 12:48:15
Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (6)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2017 by Animus Pactum Consulting. All rights reserved. Privacy Information