+0  
 
0
9
1
avatar+1459 

I run a book club with $n$ people, not including myself.  Every day, for $400$ days, I invite $2$ members in the club to review a book.  What is the smallest positive integer $n$ so that I can avoid ever having the exact same group of $2$ members over all $400$ days?

 Jun 23, 2024

3 Online Users

avatar