Given a 2 by 2 by 2 skeletal cube with one route `down' the cube.
How many routes are there from A to B?
Cunning Card Trick
Age 11 to 14 Challenge Level
When you carry out this trick, you make lots of piles on the table,
but you only keep three.
Are the others important to the problem, or can you ignore them
when you are trying to understand how the trick works?
The NRICH Project aims to enrich the mathematical experiences of all learners. To support this aim, members of the
NRICH team work in a wide range of capacities, including providing professional development for teachers wishing to
embed rich mathematical tasks into everyday classroom practice.