skip to main content

Puzzle ZOXV 

X Support Cup It is now four years since I first asked for support, and I would like to sincerely thank everyone who has helped me. BrainBashers doesn't show adverts, and I continue to depend on the ongoing support from everyone who enjoys the site.
support BrainBashers
?

At the annual BrainBashers puzzle discussion conference, 20 people attended.

At the start of the conference, each person shook hands with every other person, how many handshakes took place in total?

workings hint answer print