Problem 43166. Probabilities - Balls and urns - 02

Created byMassimo Zanetti

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稍后解决

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Last解决方案submitted on May 12, 2022

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Problem Comments

2 Comments

2 Comments

John D'Errico2016年10月7日

Poorly stated question, as it is ambiguous as to whether it is asking for the number of red balls that have been observed or the number that remain in the urn. Oh, "discarded" is spelled with a d. That much I can fix.

David Verrelli2018年7月7日

Agree with John D'Errico that the Problem Statement is ambiguous. For the record, based on case 5 of the Test Suite, it must be the _observed_ number of red balls that is to be computed.

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