KöMaL 2017 K559
How many at most six-digit numbers are there in which each of the digits 1, 2, 3, 4, 5 occurs exactly once?
Official text KöMaL. Quoted with source.
Solutions
No solution is on olymmath yet. Official and human solutions come first when they arrive. AI solutions come after them, with a label.
Similar problems
These problems have the most words in common with this statement.