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 Five Weights and a Broken Scale (Posted on 2004-08-02)
You have to sort five weights weighing 51g, 52g, 53g, 54g, and 55g. You have a balance scale with which you can compare the weights. But after solving so many sorting puzzles, it is starting to break down.

If the difference between two weights is greater than 1.5g, the scale will correctly determine which side is heavier. If the difference between the weights is less than 1.5g or equal, the scale will indicate the weights are equal.

Sort the weights in the smallest number of weighings.

 See The Solution Submitted by Brian Smith Rating: 3.7000 (10 votes)

 Subject Author Date Can be done in only 4 steps Manish 2005-03-21 06:46:28 re: Inferior alternative Vivek 2005-03-08 13:09:36 re: 5 weighings is enough Detti 2004-10-06 09:38:12 5 weighings is enough Detti 2004-10-06 08:47:14 ANOTHER PUZZLE debbie 2004-09-28 19:19:49 No Subject i_wish 2004-09-11 18:01:58 Re: 5 weighings--REALLY!!! i_wish 2004-09-11 13:05:01 re: 5 weighings Charlie 2004-09-08 15:44:02 5 weighings i_wish 2004-09-07 18:17:18 My Poor Brain bob909 2004-09-06 14:12:59 No Subject ktii 2004-08-30 04:43:21 re: Inferior alternative dhruv 2004-08-20 23:35:33 re: The rest of my comment Charlie 2004-08-03 11:41:38 re: Inferior alternative Charlie 2004-08-03 08:52:50 Inferior alternative Penny 2004-08-03 06:14:07 The rest of my comment Charlie 2004-08-02 16:12:29 Don't know if this is the fewest weighings... Charlie 2004-08-02 16:08:36

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