王民远范正森:关于慎具驶箱的方案设计 THE DESIGN CONCERNING THE PLAN FOR PACKING LOCKS INTO A BOX The maths model of Exam Paper b of te maths contest of founding models of all the college students of our country in 1994 Wang Yingyuan Fan Zhengsen (Basic Course Department) ABSTRACT This paper approaches the question of packing locks into a box from Exam Pa per B of the maths contest of founding models of all the college students of our country in 1994. First in accordance with the conditions given by the question the article calculates the number of a batch of locks by means of the method of permutation and combination Then the paper sets up a maths model of paking locks into a box with the method of maths classification. In the end the article proves that the classification given by the model is opti KEY WORDs packing locks into a box desing of plan mathematics model 2 01995-2004 Tsinghua Tongfang Optical Disc Co. LId. All rights reserved.© 1995-2004 Tsinghua Tongfang Optical Disc Co., Ltd. All rights reserved