mysteryman on 19 February 2015
Correct.
You have 9 eggs to present to the king. However one of the eggs is rotten, and presenting it to the king would result in your death. The only way to discern the rotten egg is by its weight, it will be heavier than the other eggs (the rest of which weigh the same).
You have one set of scales, but you may only place eggs on either side of the scales. You may place as many or few on either side as you wish.
What is the minimum number of weighings required to ALWAYS find the rotten egg?
