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Friday, February 12, 2010
Monday, February 8, 2010
Brain Teaser
You have 12 pearls. 11 of them are real, and 1 of them is fake. They all look/feel/everything EXACTLY the same, the only difference between the real and fake ones is their density.
You are given a balance scale (one of those old school scales that compare weights. You can weigh/compare the pearls three (3) times. Describe how you would:
1) determine the fake pearl
2) determine whether the fake pearl is more or less dense than the real pearls.
Post your answer in the comments!
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