BD-BDMO 2021 Problem 5
How many ways can you roll three 20-sided dice such that the sum of the three rolls is exactly ? Here the order of the rolls matter. (Note that a 20-sided die is is very much like a regular 6-sided die other than the fact that it has faces instead of )
Dataset text AI-MO AoPS. 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.