Introduction to Cognitive Science

A Logical Puzzle

Last Update: 21 February 2011

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Only one of the following is true about a particular hand of cards:

  1. There is a King in the hand or there is an Ace in the hand, or both.

  2. There is a Queen in the hand or there is an Ace in the hand, or both.

  3. There is a Jack in the hand or there is a 10 in the hand, or both.

Question: Is it possible that there is an Ace in the hand?

Click here for the answer.

Text copyright © 2011 by William J. Rapaport (rapaport@buffalo.edu)
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http://www.cse.buffalo.edu/~rapaport/575/logical-puzzle.html-20110221