Who's Who?
Age 11 to 16
Challenge Level
Can you solve the clues to find out who's who on the friendship graph?
Power Countdown
Age 14 to 16
Challenge Level
In this twist on the well-known Countdown numbers game, use your knowledge of Powers and Roots to make a target.
Olympic Records
Age 11 to 14
Challenge Level
Can you deduce which Olympic athletics events are represented by the graphs?
Crossing the Bridge
Age 11 to 18
Challenge Level
Four friends must cross a bridge. How can they all cross it in just 17 minutes?
Last Biscuit
Age 11 to 18
Challenge Level
Can you find a strategy that ensures you get to take the last biscuit in this game?
Copyright © 1997 - 2021. University of Cambridge.
All rights reserved.
NRICH is part of the family of activities in the Millennium Mathematics Project.
NRICH is part of the family of activities in the Millennium Mathematics Project.