Balance beam somersault gone wrong

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Anonymous2014-07-25 at 11:28:38Reply
ava, the minumum to know for sure . Can't be one beaucse if you don't pick the heavier stone the first/only time you still don't know which of the other stones is the heavier one.manjyoumesando1 is right. For each iteration you break it up into 3 groups, two are on the scale and the other is not. Each use of the scale tells you which of the 3 groups holds the heavier stone, then you break that group into 3 smaller groups and measure again.
 
Anonymous