Two wooden cubes have digits painted on each face in such a way that it is possible to display any date of the month.
Show clearly how you would label each face to achieve this.
Clearly each cube must have 0, 1 and 2 painted on it. Leading to the solution.
|Cube 1||Cube 2|
The trick being, the 6 can be turned around to make 9.
How would two wooden cubes be labelled to make all 2-digit primes?
(This time the 6 is different from the 9!)