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www.ezesoft.com Boston, MA 150 to 499 Employees
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Interview Question for QA Analyst at Eze Castle Software:
Aug 10, 2010

You have a balance beam and 8 golf balls, one golf ball weighs more than the rest, but not enough to tell by just picking it up. What is the least amount of adjustments you have to make on the balance beam to determine the heaviest golf ball with 100% certainty.


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Aug 10, 2010

by Interview Candidate:

The answer is 2. Put 3 and 3 on each, if one side is heavier you have a 1 out of 3 chance. Then put 2 of the 3 on the balance beam, if one side is heavier you know which is the heaviest ball, if they are equal it is the ball you left off.
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