MathDB

4

Part of 2005 Czech-Polish-Slovak Match

Problems(1)

Arrange balls so that A gets as many as 4 others

Source: Czech-Polish-Slovak 2005 Q4

4/27/2013
We distribute n≥1n\ge1 labelled balls among nine persons A,B,C,…,IA,B,C, \dots , I. How many ways are there to do this so that AA gets the same number of balls as B,C,DB,C,D and EE together?
floor functionalgebrapolynomialcombinatorics unsolvedcombinatorics