An interview question my cousin got from a banking company (GSachs). It took me ages to get the answer.
"Suppose you have 8 marbles and a two-pan balance used to compare the weight of 2 things. All of the marbles weigh the same except for one, which is heavier than all of the others. How would you find the heaviest marble if you are only allowed to weigh the marbles 2 times?"
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- Thread Starter
- 21-02-2016 18:14
Online21ReputationRep:Very Important Poster
- Very Important Poster
- 21-02-2016 20:20
I've seen this one before
Don't try to get rid of them all in the first weighing but be careful not to get rid of too few either!