Old 11-21-2016, 03:16 AM
CodeGroundOnlineTests CodeGroundOnlineTests is offline
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Join Date: Nov 2016
Posts: 8
Default Balance Puzzle

Hi All,
I found this interesting puzzle - There are 12 balls, one of which is different in weight (can be heavier or lighter)

Find the odd ball using less than 3 weightings of the balance

The Solution to this puzzle is detailed here: https://codeground.in/blog/index.php/2016/11/13/technical-interview-question-on-puzzles-the-ultimate-balance-puzzle/

Was this useful? If you’re interested, you can read more about more such puzzles for Tech Interviews ( https://codeground.in/blog/index.php...tions-puzzles/ )or you can take do some online programming challenges ( https://codeground.in/screening-test...-contests.html )
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Old 11-21-2016, 11:47 AM
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uigrad uigrad is offline
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Join Date: Jan 2014
Posts: 114

This is a pretty cool question and solution, but there's a small problem. The original problem asks for a solution that uses "less than 3 weightings of the balance". It seems that it should ask for "3 weighings or less".

All the cases in the solution take 3 weighings, so none of them are "less than 3 weightings of the balance".
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balance, general, puzzle

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