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Chapter 1 · Corporate and Legal AffairsPractice
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CONCEPT PRACTICE

Propositional logic

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Volume 2 · Chapter 1 · Textbook Exercises · Q9

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P, Q, and R are propositions. When the truth value of proposition P is true, which of the following is the appropriate combination of truth values for Q and R so that the two proposition expressions below are true? Proposition 1: (not P) or Q Proposition 2: (not Q) or R

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Source: FE Vol 2.pdf, PDF page 136, textbook p. 132 · Information-technology Promotion Agency, Japan · First Edition: April, 2015. ID: tb-v2-c1-q9. Publisher answer and commentary · private review.

Original question · Q9
Q9 
P, Q, and R are propositions. When the truth value of proposition P is true, which of the 
following is the appropriate combination of truth values for Q and R so that the two 
proposition expressions below are true? 
Proposition 1:  (not P) or Q 
 
Proposition 2:  (not Q) or R 
 
a) Q is true, R is false. 
b) Q is false, R is true. 
c) Q is true, R is false. 
d) Q is true, R is true.

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