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Surprising answer (Posted on 2015-09-02) Difficulty: 3 of 5
Suppose we put eight white and two black balls into a bag and then draw forth the balls one at a time.
If we repeat this experiment many times, which draw is most likely to produce the first black ball?

Try to guess (=estimate guided by intuition), then evaluate.
You'd be surprised.

Source: A.E. Lawrence, “Playing With Probability”
Mathematical Gazette, (1969)

No Solution Yet Submitted by Ady TZIDON    
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More info than you maybe wanted | Comment 2 of 6 |
  Posted by Jer on 2015-09-02 17:50:09
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