Everyone who completes practice questions and does the project will pass the exam. Everyone who reads the essay also completes the practice questions. Molly read the essay but didn't pass the exam. Therefore at least one person did not do the project

Advanced Engineering Mathematics
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ISBN:9780470458365
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Chapter2: Second-order Linear Odes
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Discrete Math Question. You must prove validity/ invalidity using Inference with quantifiers. Here is a video with the type of answer I am looking for: https://www.youtube.com/watch?v=qi65qPhjHx4

Please make sure you understand the concepts in that video before you answer. 

1. Prove why all the following statements are valid using rules of inference. 

(d) Everyone who completes practice questions and does the project will pass the exam. Everyone who reads the essay also completes the practice questions. Molly read the essay but didn't pass the exam. Therefore at least one person did not do the project

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