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: ( You must be logged in to post comments.)

Subject	Author	Date
re: All things being equal **Look for the flip side	Ady TZIDON	2007-03-10 17:25:04
All things being equal	Gamer	2007-03-10 14:55:51
re: proof ..... not applicable	Ady TZIDON	2007-03-10 04:06:26
how to edit my post	Ady TZIDON	2007-03-10 02:50:11
it is possible!!!!	Ady TZIDON	2007-03-10 02:47:36
re(2): Information theory way	Gamer	2007-03-09 11:43:25
re: Information theory way	Charlie	2007-03-09 09:50:07
Information theory way	Federico Kereki	2007-03-08 16:09:28
proof	Charlie	2007-03-08 15:46:14
Almost a solution...	Old Original Oskar!	2007-03-08 15:17:12

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