Problem A. 518. (November 2010)
A. 518. How many distinct subsets A1,...,At of an n-element set can be chosen such that for all 1i<j<kt?
(Miklós Schweitzer Competition, 2010)
(5 pont)
Deadline expired on December 10, 2010.
Statistics:
14 students sent a solution. 5 points: Ágoston Péter, Ágoston Tamás, Bágyoni-Szabó Attila, Frankl Nóra, Mester Márton, Nagy 235 János, Nagy 648 Donát, Strenner Péter, Viharos Andor, Weisz Ágoston, Zsakó András. 4 points: Backhausz Tibor, Damásdi Gábor, Lenger Dániel.
Problems in Mathematics of KöMaL, November 2010