Dr Tom Kerns



Assignment hurley6.6

Argument forms and fallacies


This assignment is due to be completed by Wednesday November 18th

This exercise will be available from Nov 11th to Nov 22nd

In this assignment you will learn:

  • six common argument forms, including
    • Disjunctive syllogism (DS)
    • Pure hypothetical syllogism (HS)
    • Modus ponens (MP)
    • Modus tollens (MT)
    • Constructive dilemma (CD)
    • Destructive dilemma (DD)
  • two common fallacies
    • Affirming the consequent (AC)
    • Denying the antecedent (DA)


  • Read chapter 6.6 of Hurley’s A Concise Introduction to Logic.

Optional Learning Aids

  • The Learning Logic tutorial on chapter 6.6


  • Login to iLrn
  • Navigate to the assignment titled hurley6.6
  • Open that assignment and do those exercises
  • You may re-do the exercises a second time if you like, and a third time, but it won’t allow you to do them more than three times.
  • iLrn will record the score you earn on the final time you did the assignment.