perplexus.info :: Weights and Scales : Two sets of Coins

Two sets of Coins (Posted on 2005-10-07)

You have two sets of five coins. Each set has four real 30g coins and one 31g fake coin. It is easy to find the fake coins using a balance scale a total of four times, two weighings for each set.

Can you find a strategy which uses only three weighings?

See The Solution Submitted by Brian Smith

Rating: 3.5000 (2 votes)

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

Subject	Author	Date
Dum solution	Deep,Dark&Dummy	2006-01-10 06:33:09
two sets of coins	Deep,Dark&Dummy	2006-01-09 06:16:23
re: not sure i get your logic for scenario two...	Charlie	2005-10-21 14:01:06
not sure i get your logic for scenario two...	Mad	2005-10-21 00:23:43
solution	Charlie	2005-10-07 21:48:39
re: 3 simple steps	Charlie	2005-10-07 18:57:24
3 simple steps	Ady TZIDON	2005-10-07 16:15:03

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