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

Home > Logic > Weights and Scales
4 labeled coins (Posted on 2016-02-16) Difficulty: 3 of 5
You are shown 4 coins, their labels specifying their weighs: 1,2,3,4.
You are told that the labels may be correct, but there is also a possibility of one coin not fitting its label.

Determine whether all coins are ok, and if not which is the faulty one, specifying is it heavier or lighter than its label.
Clearly the above task can be accomplished in 2 weightings using balance scale only.

Please describe the procedure and prove that there is only one solution.

No Solution Yet Submitted by Ady TZIDON    
Rating: 3.0000 (1 votes)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
SolutionOne way (spoiler)Steve Herman2016-02-16 14:23:49
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 (3)
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