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 Which is Which (Posted on 2006-07-07)
You have six balls - three red and three black. All the red balls weigh differently, i.e. one of them is heavy, the other medium, and the third light. Each red ball has a black twin of the same weight. A heavy and a light ball put together weigh as much as two medium balls.

What is the least number of weighings required on a balancing scale to determine which is which?

 No Solution Yet Submitted by Salil Rating: 3.0000 (3 votes)

 Subject Author Date Another Solution Brian Smith 2016-06-28 11:58:20 re(2): A different solution gregg tsujimoto 2006-08-11 19:30:37 re: A different solution atul 2006-08-10 23:30:53 A different solution gregg tsujimoto 2006-08-10 08:57:41 No Subject ameya 2006-08-08 12:15:56 Solution Dej Mar 2006-07-11 15:35:41 re(2): needs checking/ figures can't lie ant simmons 2006-07-10 15:49:20 re: needs checking/ figures can't lie Ady TZIDON 2006-07-10 03:24:59 needs checking ant simmons 2006-07-09 19:44:26 theoretic limit Charlie 2006-07-09 13:47:35 hint Salil 2006-07-08 06:06:26 Solution (at least I'd like to think so.) Liz 2006-07-08 00:06:59 re: Less trivial boundary Dej Mar 2006-07-07 16:06:41 Less trivial boundary Steve Herman 2006-07-07 11:14:56 Trivial boundary Federico Kereki 2006-07-07 10:22:33

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