A great mathematical card trick created by Colm Mulcahy!


Download the Instructions:

For a written summary of the trick, and an explanation of why it works, Download Little Pack of Fibs Instructions.


Watch the “How To” Video:


This trick can also be found in the book, Mathematical Card Magic: Fifty-Two New Effectsby Colm Mulcahy, with a foreword by Max Maven. (A.K. Peters/CRC Press, 380 pp., 128 illustrations, August, 2013). It’s also revisited on the Math Awareness Month Calendar.