hw2 09

# hw2 09 - Problem Set 2 Elementary Logic Due 15 April 2009...

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Problem Set 2 Elementary Logic Due: 15 April 2009 Name Student ID Number email Mark % Due 15 April 2009 by 4:00PM . Submit your problem set to Ms. Loletta Li in Main Building 312. Make sure your problem set is timestamped. Do not submit assignments by email. Late penalty: 10% for each day late. This problem set will not be accepted after 17 April. Answer the questions on the problem set itself. Write neatly. If the grader cannot read your handwriting, you will not receive credit. Be sure that all pages of the assignment are securely stapled together. Check the course bulletin board for announcements about the assignment. Do your own work. If you copy your problem set, or permit others to copy, you may fail the course. 1

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1. (15 marks) True or false? Circle ‘T’ if the statement is true. Circle ‘F’ if the statement is false. ϕ and ψ are SL WFFs. T F If ϕ is a tautological disjunction, then each disjunct of ϕ is consistent. T F If ϕ is an inconsistent conjunction, then each conjunct of ϕ is inconsistent. T F ϕ is consistent with ( ϕ ϕ ). T F If X is an inconsistent set of MPL WFFs, then every member of X is consistent. T
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hw2 09 - Problem Set 2 Elementary Logic Due 15 April 2009...

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