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Five Weights and a Broken Scale (Posted on 2004-08-02) Difficulty: 4 of 5
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)

Comments: ( You must be logged in to post comments.)
  Subject Author Date
Can be done in only 4 stepsManish2005-03-21 06:46:28
re: Inferior alternativeVivek2005-03-08 13:09:36
Hints/Tipsre: 5 weighings is enoughDetti2004-10-06 09:38:12
Hints/Tips5 weighings is enoughDetti2004-10-06 08:47:14
ANOTHER PUZZLEdebbie2004-09-28 19:19:49
No Subjecti_wish2004-09-11 18:01:58
Hints/TipsRe: 5 weighings--REALLY!!!i_wish2004-09-11 13:05:01
re: 5 weighingsCharlie2004-09-08 15:44:02
5 weighingsi_wish2004-09-07 18:17:18
Some ThoughtsMy Poor Brainbob9092004-09-06 14:12:59
Some ThoughtsNo Subjectktii2004-08-30 04:43:21
Some Thoughtsre: Inferior alternativedhruv2004-08-20 23:35:33
re: The rest of my commentCharlie2004-08-03 11:41:38
re: Inferior alternativeCharlie2004-08-03 08:52:50
Inferior alternativePenny2004-08-03 06:14:07
The rest of my commentCharlie2004-08-02 16:12:29
Some ThoughtsDon't know if this is the fewest weighings...Charlie2004-08-02 16:08:36
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