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Logic Puzzles

By Dan Filler, Laura Appleman et al.

<p>A while ago I was reading Malcolm Gladwell's <a href="http://www.gladwell.com/blink/index.html">Blink</a> and I was taken with two logic puzzles that readers of this blog might enjoy.  They are found on pages 120 and 121 of the book respectively.<br /><a href="http://blurblawg.typepad.com/.a/6a00e54f871a9c88330128776a408d970c-pi" style="display: inline;"><img alt="Blink" border="0" class="asset asset-image at-xid-6a00e54f871a9c88330128776a408d970c " src="http://blurblawg.typepad.com/.a/6a00e54f871a9c88330128776a408d970c-800wi" title="Blink" /></a> <br /> 1.  A man and his son are in a serious car accident.  The father is killed, and the son is rushed to the emergency room.  Upon arrival, the attending doctor looks at the child and gasps, "This child is my son!"  Who is the doctor?</p><p>2. A giant inverted steel pyramid is perfectly balanced on its point.  Any movement of the pyramid will cause it to topple over.  Underneath the pyramid is a $100 bill.  How do you remove the bill without disturbing the pyramid?</p><p>Answers below the fold...</p> <p><br />1. The doctor is the boy's mother.<br />2. Destroy the $100 bill in some way - tear it or burn it.</p>

Full post as published by The Faculty Lounge on February 05, 2010 (boomark / email).