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

Home > Just Math
Proof (Posted on 2002-05-29) Difficulty: 3 of 5
Prove that 3.999... = 4

See The Solution Submitted by Half-Mad    
Rating: 3.6667 (9 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re(3): alternate proof | Comment 16 of 45 |
(In reply to re(2): alternate proof by SilverKnight)

I believe Tom already addressed this in one of his replies. He said that no matter how small a number you add to 3.99999... you will not get inbetween 3.9999... and 4, but go above four.

Unlike the example gamer gave, this isn't just a set of integers from which there is no number inbetween. This is ALL numbers. There are plenty of numbers inbetween 1 and 2 if you think of the complete set of numbers.

I admit my proof isn't rigorous, but I believe that should be enough proof for most people. If you, SK, think you can improve it, go ahead (or not).
  Posted by Tristan on 2003-10-02 17:39:00

Please log in:
Login:
Password:
Remember me:
Sign up! | Forgot password


Search:
Search body:
Forums (1)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (17)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:
Copyright © 2002 - 2024 by Animus Pactum Consulting. All rights reserved. Privacy Information