Painting by Numbers
Age 16 to 18
Challenge Level
How many different colours of paint would be needed to paint these pictures by numbers?
Impossible Triangles?
Age 16 to 18
Challenge Level
Which of these triangular jigsaws are impossible to finish?
The Clue Is in the Question
Age 16 to 18
Challenge Level
Starting with one of the mini-challenges, how many of the other mini-challenges will you invent for yourself?
Difference Dynamics
Age 14 to 18
Challenge Level
Take three whole numbers. The differences between them give you three new numbers. Find the differences between the new numbers and keep repeating this. What happens?
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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.