If the orchestra could not play classical music or the refreshments were not delivered on time, then the birthday party would have been canceled and Soraya would have been angry. If the party were canceled, then refunds would have had to be made. No refunds were made. Therefore the orchestra could play classical music.

Operations Research : Applications and Algorithms
4th Edition
ISBN:9780534380588
Author:Wayne L. Winston
Publisher:Wayne L. Winston
Chapter19: Probabilistic Dynamic Programming
Section: Chapter Questions
Problem 10RP
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By using propositional variables, logical connectives, and quantifiers, determine whether the argument is valid. If it is valid, what rule of inference is being used? If it is not, what logical error occurs?

If the orchestra could not play classical music or the refreshments were not
delivered on time, then the birthday party would have been canceled and
Soraya would have been angry. If the party were canceled, then refunds
would have had to be made. No refunds were made. Therefore the orchestra
could play classical music.
Transcribed Image Text:If the orchestra could not play classical music or the refreshments were not delivered on time, then the birthday party would have been canceled and Soraya would have been angry. If the party were canceled, then refunds would have had to be made. No refunds were made. Therefore the orchestra could play classical music.
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