Microsoft | Phone | Weighing 9 Balls Puzzle
Anonymous User
2688

Last week I had a phone interview with Microsoft for a new grad SWE.

I was asked:

  • Explain Recursion
  • Requirements for Good Code
  • Good Code vs Best Code
  • Challenging project that I worked on, technical details
  • Why Microsoft

Puzzle:
You have 9 balls. One of them is defective and weighs less than others. You have a scale to measure balls against each other. Using the scale only twice how do you find the defective one?

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