perplexus.info :: Weights and Scales : Four Coins and Three Weighings

Four Coins and Three Weighings (Posted on 2007-03-08)

You have four coins to sort with a standard balance scale. Their weights are 20g, 21g, 22g and 23g. Prove that there is no strategy which can guarantee sorting the coins with only three weighings.

See The Solution Submitted by Brian Smith

Rating: 4.3333 (3 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)

re: proof ..... not applicable

| Comment 8 of 10 |

(In reply to proof by Charlie)

Charlie

You have ignored the values of the coins

Please see my post /

Ady

Posted by Ady TZIDON on 2007-03-10 04:06:26

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 (5)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info