Quantitative Trader Interview Questions

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You have 12 identical balls, one ball is heavier than the rest (you don't know which). Using just a balance which can only show which side is heavier, what is the minimum number of times you can use the weight to find the heavier ball?
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Quantitative Trader

Interviewed at IMC Trading

4.1
Mar 25, 2022

You have 12 identical balls, one ball is heavier than the rest (you don't know which). Using just a balance which can only show which side is heavier, what is the minimum number of times you can use the weight to find the heavier ball?

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