Problem 43166. Probabilities - Balls and urns - 02

Created by Massimo Zanetti

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Last Solution submitted on Dec 30, 2020

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2 Comments

John D'Errico on 7 Oct 2016

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 Verrelli on 7 Jul 2018

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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Problem 43166. Probabilities - Balls and urns - 02

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Problem 43166. Probabilities - Balls and urns - 02

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