muscleupcrohn
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Not really a riddle I guess, but a crazy difficult problem one of my professors asked my class and no one figured it out:
There is a pile of twelve coins, all of equal size. Eleven are of equal weight. One is of a different weight. In three weighings find the unequal coin and determine if it is heavier or lighter.
The answer is super long and complicated, so here’s the link:
http://mathforum.org/library/drmath/view/55618.html
There is a pile of twelve coins, all of equal size. Eleven are of equal weight. One is of a different weight. In three weighings find the unequal coin and determine if it is heavier or lighter.
The answer is super long and complicated, so here’s the link:
http://mathforum.org/library/drmath/view/55618.html
