I run a coffee club with 4 people, not including myself. Every day, for 365 days, I invite four members in the club to have coffee with me. What is the smallest positive integer n so that I can avoid having the same group of four members over all 365 days?
The answer was found to be 12
Question was answered maybe 2 days ago......search for it to find solution....
Here it is:
https://web2.0calc.com/questions/need-help_33992