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Overhanging Cards


	Starting from the top of a deck of cards, each card is pushed over so that it just balances. The overhang for each card is half the corresponding entry in the harmonic sequence and the total overhang is given by half the partial sum of the harmonic series.


	Contributed by: Noel Patson After work by: John Derbyshire
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Reference:

J. Derbyshire, Prime Obsession: Bernhard Riemann and the Greatest Unsolved Problem in Mathematics, Washington, DC: Joseph Henry Press, 2003 pp. 3–9.

Harmonic Series (Wolfram MathWorld)

Stacking Dominoes to the Limit (The Wolfram Demonstrations Project)

"Overhanging Cards " from The Wolfram Demonstrations Project
http://demonstrations.wolfram.com/OverhangingCards/

Contributed by: Noel Patson

After work by: John Derbyshire

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