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COS2661 Assignment 2 Answers for 2026

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Assignment questions Translate the following English sentences into a first-order logic (FOL) sentence, using the names and predicates given in the above table: 2.1. If the Justin is a coach, then his team will win the league. 2.2. Unless Melton and Leroy play for a league, then non will win the league. 2.3. If Robin plays for a league, Melton and Leroy plays with him and Justin is their coach 2.4. Robin plays either for Lakers or Los Angels, and it is not the case that Robin plays for both Lakers and Los Angels. 2.5. Melton plays for Lakers and Leroy plays for Lakers if and only if Justin coaches Lakers and Robin plays for Los Angels.

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Institution
University Of South Africa (Unisa)
Course
Formal Logic II (COS2661)

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COS2661 ASSIGNMENT 2 2026


QUESTION 1

1.1.

1.1.1. P → Q, Q → R, ¬R Conclusion: ¬P

Valid arguments

P Q R P→Q Q→R ¬R ¬P
T T T T T F F
T T F T F T F
T F T F T F F
T F F F T T F
F T T T T F T
F T F T F T T
F F T T T F T
F F F T T T T
Hence the conclusion ¬P is valid because whenever all premises are true the
conclusion is also true.
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Formal Logic II (COS2661)

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  • cos2661 assignment 2 answers for 2026
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