Introduction to Cognitive Science

A LOGICAL ILLUSION

Consider the following statements about a hand of cards:

  1. If there is a Jack in the hand, then there is a King in the hand, or else if there's no Jack in the hand, then there is a King in the hand.

  2. There is a Jack in the hand.

What follows?

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Copyright © 2001 by William J. Rapaport (rapaport@cse.buffalo.edu)
file: 575/F01/logical.illusion.16oc01.html