Research Coordinator Interview Questions

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Brain teaser: You have nine coins that are identical in weight except for one which is lighter than the others. The difference is perceptible by weighing them on a scale, and only the coins themselves may be weighed. How can you identify the lighter coin in the least amount of weighings?
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Research Associate

Interviewed at Locus Biosciences

2.2
Jan 4, 2020

Brain teaser: You have nine coins that are identical in weight except for one which is lighter than the others. The difference is perceptible by weighing them on a scale, and only the coins themselves may be weighed. How can you identify the lighter coin in the least amount of weighings?

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