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These problems relate to objects of different weight, and using a balanced scale to determine the odd item, be it a false coin, or an under-filled sack of grain. (Usually it's coins though)
There are 12 people and a seesaw on an island, and you have the following information:
1) There is one islander who weighs differently than the other 11, but you don't know which one, nor if they are heavier or lighter.
2) You may use the seesaw to compare the weights of any two sets of islanders of your choosing.
3) Each of the twelve islanders is uniquely identifiable and can be weighed more than once.
What is the least number of times you need to use the seesaw in order to guarantee that you can identify the person who has the different weight?
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High speed horses
Posted on 2019-08-01 by (No Solution Yet, 3 Comments) Danish Ahmed Khan Half a dozen of weights
Posted on 2019-01-23 by (No Solution Yet, 1 Comments) Ady TZIDON One trial only!
Posted on 2018-10-22 by (No Solution Yet, 1 Comments) Ady TZIDON From right to left
Rating: 4.00 Posted on 2017-06-01 by (No Solution Yet, 2 Comments) Ady TZIDON Unbalanced?- No problem
Rating: 4.00 Posted on 2017-05-30 by (No Solution Yet, 7 Comments) Ady TZIDON Hands off!
Rating: 3.00 Posted on 2017-05-16 by (No Solution Yet, 3 Comments) Ady TZIDON Ratio Resolution IV
Posted on 2016-10-20 by (No Solution Yet, 3 Comments) K Sengupta River Cross Resolution
Posted on 2016-10-12 by (No Solution Yet, 1 Comments) K Sengupta Labeling Minimum
Posted on 2016-08-25 by (No Solution Yet, 4 Comments) K Sengupta Ball Series Insertion
Posted on 2016-07-29 by (No Solution Yet, 1 Comments) Brian Smith Five Pairs of Balls
Posted on 2016-07-22 by (No Solution Yet, 1 Comments) Brian Smith Restricted Five Coin Sort
Posted on 2016-07-14 by (Solution Posted, 1 Comments) Brian Smith The heavy couple
Posted on 2016-04-22 by (Solution Posted, 5 Comments) Ady TZIDON No Equal Weighings
Rating: 3.00 Posted on 2016-04-18 by (Solution Posted, 4 Comments) Brian Smith
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