Thu Jan 17, 2013 11:44 pm by tartle 


a set of football matches is to be organized in a round robin fashion i.e every participating teams plays a match against every other team once if 45 matches are totally played ,how many teams participated? 




Mon Feb 04, 2013 9:39 pm by RDT316 


Nine 




Thu Jul 14, 2016 7:42 am by Dzallen 


n(n1)/2=45
n=10
Last edited by Dzallen on Fri Jul 15, 2016 1:34 am; edited 1 time in total 




Thu Jul 14, 2016 2:24 pm by bathfilms 


1 team only : 0 matches
2 teams : 1 match
3 teams : 3 matches
4: 6
5: 10
6: 15
7: 21
8: 28
9: 36
10: 45
So the answer is 10
(The sequence is 1,3,6,10,15,21,36,45... increasing by 1,2,3,4,5... etc) 






All times are GMT

Page 1 of 1 
