Let one grain of wheat be placed on the first square of a Chessboard, two on the second, four on the third, eight on
the fourth, etc. How many grains total are placed on an Chessboard? Since this is a Geometric
Series, the answer for squares is

Plugging in then gives .

**References**

Pappas, T. ``The Wheat & Chessboard.'' *The Joy of Mathematics.* San Carlos, CA: Wide World Publ./Tetra,
p. 17, 1989.

© 1996-9

1999-05-26