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An urn contains 2n balls, of which 2 are numbered 1, 2 are numbered 2, ... , and 2 are numbered n. balls are successively withdrawn 2 at a time without replacement
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An urn contains 2n balls, of which 2 are numbered 1, 2 are numbered 2, ... , and 2 are numbered n. balls are successively withdrawn 2 at a time without replacement

User Sebthebert
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she had a 88% chance because she used enough urn
User RomanMinkin
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