Weekly Maths Challenge 12

 If there are 20 teams in a football league, and if every team plays every other team at home and away, how many games will have been played by the end of the season?

Entries must be emailed with your name and form to mathschallenge@ucc.rutland.sch.uk by Friday 12th June.  First 10 correct answers will be announced in notices. Winners will receive House Points.