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 Four Weights (Posted on 2004-07-25)
You have 4 weights weighing 2,3,5 and 7 pounds. The problem is none of them are marked. What is the fewest number of weighings you need using a balance scale figure out which weights are which?

 See The Solution Submitted by Brian Smith Rating: 3.5000 (8 votes)

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 Subject Author Date Puzzle Resolution K Sengupta 2007-06-18 04:55:04 Answer K Sengupta 2007-06-18 04:53:25 my easy solution Andy 2005-05-01 17:01:12 mmmmm Taylor 2005-04-09 23:42:58 re(2): My son's solution Bruce Brantley 2004-12-30 12:45:22 re: My son's solution ron 2004-12-30 03:27:52 My son's solution Bruce Brantley 2004-12-12 09:40:51 re. nitpicking Hattie 2004-11-24 18:53:58 nitpicking foto 2004-09-09 20:14:25 No Subject ktii 2004-08-30 04:46:15 Sorting Networks. dhruv 2004-08-23 11:54:45 four or five Bruce Brantley 2004-08-21 22:40:25 re(2): 2 weighings, re(4): done in 3 weighings.... I think =P mauro schievano 2004-08-10 08:20:17 re: 2 weighings, re(4): done in 3 weighings.... I think =P Vina 2004-07-28 03:16:45 2 weighings, re(4): done in 3 weighings.... I think =P Hugo 2004-07-27 10:50:56 re(4): done in 3 weighings.... I think =P Vina 2004-07-27 03:26:15 re(3): done in 3 weighings.... I think =P Brian Smith 2004-07-26 21:53:33 re(2): done in 3 weighings.... I think =P Vina 2004-07-26 14:06:20 re: done in 3 weighings.... I think =P Brian Smith 2004-07-26 08:11:29 done in 3 weighings.... I think =P Vina 2004-07-25 22:42:50 re: Why use a computer, common sense says Federico Kereki 2004-07-25 21:05:16 re: Why use a computer, common sense says Juggler 2004-07-25 17:16:45 Why use a computer, common sense says Juggler 2004-07-25 17:04:35 But that leaves the question.... Penny 2004-07-25 16:27:00 All the examples Charlie 2004-07-25 14:12:08 Four weighings Hugo 2004-07-25 13:26:55 An example Charlie 2004-07-25 12:36:07 re: a computerized start Charlie 2004-07-25 12:18:58 A non-computerized finish Penny 2004-07-25 12:07:26 re: a computerized start Charlie 2004-07-25 12:06:55 a computerized start Charlie 2004-07-25 11:58:17 re: fewest numbers = 4 Penny 2004-07-25 11:15:05 fewest numbers = 4 peychinhwee 2004-07-25 09:55:48

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