Table of Contents

Two games with matchsticks by I. M. Yaglom Economics and linear inequalities by A. B. Katok Economics and linear inequalities (Continuation) by A. B. Katok Switching networks by R. V. Freivald Who will go to Rio? by G. M. Adel'son-Vel'skii, I. N. Bernshtein, and M. L. Gerver From the life of units by A. L. Toom Nonrepeating sequences by G. A. Gurevich Words with restrictions by A. M. Stepin and A. T. Tagi-Zade Planar switching circuits by S. Ovchinnikov Classification algorithms by P. Bleher and M. Kel'bert How to detect a counterfeit coin by G. Shestopal The generalized problem of counterfeit coins by M. Mamikon Truthtellers, liars, and deceivers by P. Bleher Solvable and unsolvable algorithmic problems by V. A. Uspenskii and A. L. Semenov Best bet for simpletons by P. A. Pevzner.