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Altisource Senior Product Manager Interview Question

I interviewed in Boston, MA and was asked:
""There are 8 balls, one of which is slightly lighter than the others. You have a balance, how do you find the lighter ball?""
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Part of a Senior Product Manager Interview Review - one of 109 Altisource Interview Reviews

Answers & Comments

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The answer is to weigh three balls on each side first. If they balance then you weigh the two you didn't initially weigh. If they don't balance they you weigh two from the side that was lighter. You can get to the answer weighing only twice.
- Interview Candidate on Sep 25, 2013

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