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     Making 24 is a simple card game, so it is very popular in people, especially to the youngsters. Since children may well be willing to do a great deal more arithmetic in game from than routine ones, playing making 24 is a better way to develop their abilities to compute mentally and quickly.

       People may meet with some problems in the course of the game, such as whether the pattern is the simplest and whether the group is surely unable to get 24. All these problems have been solved in the book.


Department of Mathematics of East China Normal University
Jinlong Shu jlshu@math.ecnu.edu.cn   September,20,2001