Maths Day 2017 attracted a record number of high school maths enthusiasts from New South Wales and the ACT to ANU.
About 190 year 11 and 12 students took part in maths challenges designed to build teamwork skills and promote a love of maths.
Associate Professor Stephen Roberts from the ANU Mathematical Sciences Institute said Maths Day is about having fun in mathematics.
"It is really uplifting to see a lot of young people interested in mathematics come to campus and realise there are lots of other people who are interested in maths as well," said Dr Roberts.
"The event is designed so that problems can be tackled by a whole range of people with different skills using algebra or geometry or other techniques."
The day culminated with a relay, a test of brainpower and physical stamina.
The event has been running since 1982. Participants travelled from Canberra and surrounds, Sydney, Wollongong, South Coast and Southern Highlands to take part in the day.
ANU Maths Day isn't all about being the cleverest or the brightest. Activities are designed to ensure that everyone can have a go and have fun while taking part in some healthy and rigorous competition.