Formal Logic II (COS2661)
University of South Africa (Unisa)
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COS2661 Assignment 2 Answers for 2026
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...
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COS2661 Assignment 3 memo 2024
PopularCOS2661 Assignment 3 memo 2024: 
QUESTION 1 
[15] 
In this question you have to translate sentences of English sentences into First-Order Logic, using the 
predicates and names given in Table 1. 
English 
FOLComment 
TabisoTabisoThe name of a boy. 
StudentstudentTafaratafaraPetpet 
Names 
The name of a girl. 
Predicates 
x is smallSmall (x) 
x is largeLarge (x) 
x LeftOf yLeftOf (x, y) 
x Smaller ySmaller (x, y) 
x Larger yLarger (x, y) 
x Owned yOwned (x, y) 
x BackOf yBackOf (x, y) 
x Gave yGa...
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COS2661(Formal logic 2) All assignments and Memo for 2025
this includes all assignments and memo for 2025 academic year, this includes explanations.
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Cos2661 Assignment 03 Answers/Solutions 2026
Cos2661 Assignment 03 Answers/Solutions 2026
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Cos2661 Assignment 3 Answers year 2026
Assignment Question sample 
1.1. Everyone is a farmer and is from Bloemfontein. 
1.2. Something is a male human from Bloemfontein. 
1.3. Someone is neither a farmer nor a pharmacist and is from Bloemfontein. 
1.4. Nothing is a male scientist from Bloemfontein. 
1.5. All male humans are mortal mammals. 
1.6. Some female humans are scientists who live in Bloemfontein. 
1.7. Some female humans are not pharmacist who live in Bloemfontein. 
1.8. All farmers do not keep...
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COS2661 Assignment 2 Answers / Solutions 2026
Assignment questions 
QUESTION 1 
1.1. For the following sentence determine whether the indicated pairs of sentences are valid 
argument. Use truth tables to show your answer. 
1.1.1. P → Q, Q → R, ¬R Conclusion: ¬P 
1.1.2. A→ B, B → C, C → D Conclusion: D → A 
1.1.3. A→ B, B, Conclusion: A
Exam (elaborations)
COS3701 - Assignment 1 (Solutions & Questions) Semester 02 - 2025
COS3701 - Assignment 1 (Solutions & Questions) Semester 02 - 2025
Exam (elaborations)
COS2661 - Assignment 2 (Solutions & Questions) Semester 02 - 2025
COS2661 - Assignment 2 (Solutions & Questions) Semester 02 - 2025
Exam (elaborations)
COS2626 - Assignment 2 (Solutions & Questions) Semester 02 - 2025
COS2626 - Assignment 2 (Solutions & Questions) Semester 02 - 2025
Exam (elaborations)
COS2626 - Assignment 1 (Solutions & Questions) Semester 02 - 2025
COS2626 - Assignment 1 (Solutions & Questions) Semester 02 - 2025
Exam (elaborations)
COS2621 - Assignment 2 (Solutions & Questions) Semester 02 - 2025
COS2621 - Assignment 2 (Solutions & Questions) Semester 02 - 2025
Exam (elaborations)
COS2621 - Assignment 1 (Solutions & Questions) Semester 02 - 2025
COS2621 - Assignment 1 (Solutions & Questions) Semester 02 - 2025
Exam (elaborations)
COS2661 ASSIGNMENT 2 (QUESTIONS AND ANSWERS) SEMESTER 1 2025
COS2661 ASSIGNMENT 2 (QUESTIONS AND ANSWERS) SEMESTER 1 2025
Exam (elaborations)
COS2661 ASSIGNMENT (QUESTIONS AND ANSWERS ) 2025
COS2661 ASSIGNMENT (QUESTIONS AND ANSWERS ) 2025
Exam (elaborations)
COS2661 Assignment 2 (QUESTIONS & ANSWERS) 2025 - DUE 25 June 2025
COS2661 Assignment 2 (QUESTIONS & ANSWERS) 2025 - DUE 25 June 2025
Exam (elaborations)
COS2601 Assignment 2 (QUESTIONS & ANSWERS) 2025 - DUE 25 June 2025
COS2601 Assignment 2 (QUESTIONS & ANSWERS) 2025 - DUE 25 June 2025
Summary
COS2661 Chapter 1-13 summary study notes
This document serves as a valuable resource for anyone preparing for exams in formal logic, providing structured notes, summaries, and step-by-step breakdowns of logical principles and proof strategies
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COS2661 Assignment 3 memo 2024
COS2661 Assignment 3 memo
Exam (elaborations)
COS2661 ASSIGNMENT3 SOLUTIONS 2023DUE DATE: 31 AUGUST
This document contains 100% solutions for the assignment 3 formal logic 2 
all solutions are typed and proper methods are followed constructing the solutions.