Posts filed under ‘The Oddball Problem’

12 Coins

You have 12 identical-looking coins, one of which is counterfeit.
The counterfeit coin is either heavier or lighter than the remaining 11.
Can you find the counterfeit coin with only three weighings?

Cut the Knot: The Oddball Problem, Weighing 12 coins
Solution for the “12 Coins” Problem
Weighty Problems

September 19, 2010 at 3:22 pm Leave a comment