Let’s say you are given nine identical-looking eggs and told that one is heavier than the others, but you aren’t told which one. Fortunately, you have a beam balance for comparing the masses of the eggs. Unfortunately, the balance is a rental, and you are being charged each time you use it.
So assuming you are strapped for cash and wish to know which of the nine eggs is heaviest—who wouldn’t?—what is the minimum number of times you must weigh the eggs in order to find it?
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