# hw2 - Problem Set 2 Elementary Logic Due 19 November 2008...

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Problem Set 2 Elementary Logic Due: 19 November 2008 Name Student ID Number email Mark % Due 19 November 2008 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 21 November 2008. 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 x ( Wx Wx )” is a valid MPL WFF. T F “It is probable that” is a truth functional connective. T F If ϕ is a tautological conjunction, then each conjunct of ϕ is consistent. T F If ϕ is an inconsistent conditional, then the antecedent of ϕ is inconsistent.
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