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 Effects, by 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.