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math problem - 10 numbered balls in a hat and 10 people select a ball Thread starter: rusnak | by kubikulann Dec 3, 2012 at 6:24 AM | 5 | 1730 |
How to pick n-1 out of n winners? Thread starter: rusnak | by rusnak Feb 2, 2011 at 5:30 PM | 15 | 2846 |